STRUCTURAL DYNAMICS RESEARCH CORP /OH/
10-K, 1998-03-30
PREPACKAGED SOFTWARE
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                             UNITED STATES
                  SECURITIES AND EXCHANGE COMMISSION

                        WASHINGTON, D.C.  20549


                               FORM 10-K


           ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                  THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended      Commission file number 33-16541
   December 31, 1997

               STRUCTURAL DYNAMICS RESEARCH CORPORATION

     An Ohio Corporation       I.R.S. Employer
                               Identification No. 31-0733928

2000 Eastman Drive,           Telephone Number (513) 576-2400
Milford, Ohio  45150

 Securities registered pursuant to Section 12(b) of the Act: None
 Securities registered pursuant to Section 12(g) of the Act:

                            Title of class

                    Common Stock without par value

Indicate by check mark whether the registrant (1) has  filed
all  reports  required  to  be filed by Section  13  or  15(d)  of 
the Securities Exchange Act of 1934 during the preceding 12 months
(or  for such  shorter  period  that the registrant was required  to 
file  such reports), and (2) has been subject to such filing
requirements for  the past 90 days.  Yes  X     No


Indicate by check mark if disclosure of delinquent filers pursuant
to Item  405  of Regulation S-K (229.405 of this chapter) is not
contained herein,  and  will  not  be  contained, to  the  best  of 
registrant's knowledge,  in definitive proxy or information
statements  incorporated by  reference  in Part III of this Form
10-K or any amendment  to  this Form 10-K. [ ]


As  of  March  18,  1998, 36,018,754 shares  of  Common  Stock  were
outstanding.  The  aggregate  market value  of  Common  Stock  held 
by non-affiliates was $771,621,688 at that date.


              DOCUMENTS INCORPORATED BY REFERENCE

List  hereunder  the following documents if incorporated  by
reference  and  the Part of the Form 10-K into which  the  document 
is incorporated:

Registrant's Annual Report to Shareholders for the year ended
December  31, 1997.
                      Part I, Part II and Part IV

Registrant's definitive Proxy Statement dated April 1, 1998.
                     Part II, Part III and Part IV
                                PART I

Factors That May Affect Future Results

Information  provided by the Company or by its  spokespersons
may  contain  forward-looking statements.  Such statements,  made
pursuant   to   the   safe  harbor  established   by   securities
legislation,  are  based  on  the estimates  and  assumptions  of
management  at  the  time such statements  are  made.    Forward-
looking  statements  are subject to risks and uncertainties  that
may  cause  the  Company's future results to  differ  from  those
disclosed   in   any   forward-looking   statement.     Important
information  about  the  basis  for  management's  estimates  and
assumptions  is  contained in "Factors  That  May  Affect  Future
Results" included in the "Management's Discussion and Analysis of
Financial  Condition and Results of Operations"  section  in  the
SDRC 1997 Annual Report to Shareholders, which is incorporated by
reference.

Item 1:   Business

General

Structural  Dynamics  Research Corporation  (the  Company  or
SDRC) is a leading supplier of mechanical design automation (MDA)
software,  product  data management (PDM)  software  and  related
services  within the worldwide mechanical computer-aided  design,
manufacturing   and  engineering  (CAD/CAM/CAE)  industry.    The
Company's  mission is to provide software tools and  services  to
significantly   enhance  SDRC's  customers'  mechanical   product
development and engineering processes.

The  Company's  software products and  services  provide  its
customers   with   an  integrated  solution  for   a   concurrent
engineering   design,   computerized   manufacturing,   and   the
management  of  product  life cycle information.   The  Company's
principal  MDA  software product, I-DEAS Master  Series(TM),  is  an
integrated  CAD/CAM/CAE  solution which allows  manufacturers  to
optimize product performance and reduce costs by streamlining the
product development process. The Company's I-DEAS Artisan Series(TM)
product is aimed at the mid-level CAD/CAM/CAE market. SDRC's  PDM
product,    Metaphase    Enterprise(TM)   software,    provides a
comprehensive, company-wide tool for the management  and  control
of  product  information, configuration, release  management  and
work  flow.  The Company's products and services are valuable  to
companies  which  must accelerate, improve and streamline  design
processes   in   response   to   increased   competition    while
simultaneously designing and manufacturing mechanical products in
accordance  with  specific quality and cost  criteria.   A  broad
range of industries are potential users of these tools, with  the
highest  concentration of users in the automotive,  consumer  and
industrial   electronics,  industrial  machinery  and   aerospace
industries.


Background

The Company was incorporated under the laws of the State of
Ohio  in  1967.   The  Company was founded  to  provide  advanced
engineering consulting services, and over time, developed some of
the industry's first mechanical engineering software packages  to
assist   in  its  consulting  efforts.   After  receiving  strong
customer  interest in these software packages, the Company  began
marketing its software in the early 1970s.

Background - Continued

In  recent  years, the Company has made business acquisitions
to  expand  its  ability to develop and market  new  products  to
customers.   In 1992, the Company and Control Data Systems,  Inc.
established  Metaphase Technology, Inc. (Metaphase)  as  a  joint
venture company to develop product data management software.   In
January  1997,  the  Company  acquired  the  remaining  stock  of
Metaphase  and  certain assets of Control  Data  Systems,  Inc.'s
global  PDM  software sales and support business.  In  1994,  the
Company  and  Siemens Nixdorf Informationssysteme AG  formed  the
joint  venture, SDRC Software and Services GmbH (SDRC  GmbH),  to
supply  mechanical CAD/CAM/CAE software and services  in  Central
Europe.  In 1995, the Company purchased the remaining interest of
SDRC  GmbH.   Also  in  1995,  the Company  merged  its  software
products marketing and engineering services subsidiaries  into  a
single  subsidiary to provide both software products and  related
services.  In June 1996, the Company completed the acquisition of
Camax  Manufacturing Technologies, Inc. (Camax)  and  its  wholly
owned  subsidiaries.  Camax provided the Company  technology  for
computer-aided  manufacturing  software  including   computerized
numerical  control  machining operations. In  1997,  the  Company
acquired  Computer Aided Systems for Engineering, Inc. which  had
been  a  third  party author of certain I-DEAS drafting  modules.
The  acquisition provided SDRC with full control of  its  product
development  for  drafting  and  opportunity  to  facilitate  the
creation of new products.
          
Product Development


The  Company  works  closely with its customers  to  identify
their  needs  and define software enhancements to be incorporated
into   SDRC   products.   The  Company  generally  develops   new
functionality  internally through its product development  staff.
The  Company also arranges with third party developers to provide
specific  functionality through royalty arrangements and software
purchase agreements.
          
Development  of CAD/CAM/CAE and PDM technology is competitive
and advances can occur rapidly.  There are no assurances that the
Company  will be successful in developing new products  and  that
new products will achieve sufficient market acceptance.  Research
and   development   expense   were   approximately   $49,415,000,
$34,018,000,   and   $26,507,000  in  1997,   1996,   and   1995,
respectively.
          

I-DEAS Product Suite

The  Company  develops, markets and supports a  comprehensive
MDA software product called I-DEAS (Integrated Design Engineering
Analysis  Software)  Master  Series and  a  mid  priced  software
product  called  I-DEAS Artisan Series.  I-DEAS  software  allows
engineers  to  design,  simulate, test  and  manufacture  product
concepts  faster  than  the time required  using  stand-alone  or
partially  integrated software tools.  As a result, the  software
is  a  tool  to  assist  customers in developing  higher  quality
products faster, at a lower cost, and to deliver products to  the
market  in  less  time.   The  I-DEAS  software  is  specifically
designed and optimized to meet the needs of engineers who  design
products  by using solid modeling technology.  With the  easy  to
learn user interface, users are able to create and view a "master
model,"  a  solid  representation of  a  product  that  precisely
defines its geometry and material characteristics.


I-DEAS Product Suite - Continued

I-DEAS Master Series software allows product development  team
members  to  work  concurrently on the same project  sharing  this
common master model.  The master model can be easily understood by
everyone  concerned  with  the product, including  representatives
from  management, marketing and manufacturing.  It can be analyzed
to evaluate the mechanical performance and structural integrity of
the design concept, as well as to provide information that can  be
used to optimize product performance, study assembly sequences and
assess "manufacturability".


The  Artisan  Series was specifically created to  address  the
growing mid-price CAD market.   Artisan provides high level design
functionality  to  smaller  design  groups  and  companies   while
ensuring  upward data compatibility and user migration  to  I-DEAS
Master Series.

Metaphase Enterprise


SDRC   also  develops,  markets,  implements  and  supports
Metaphase Enterprise product data management software, which helps
create,   manage   and  control  data  associated   with   product
information  as  it  evolves  through  the  product  life   cycle.
Metaphase  Enterprise is a modular PDM system designed to  provide
the  depth and breadth of functionality customers require to  meet
current and future data management needs.


Metaphase Enterprise software helps customers improve the  way
they create, share, access, define and support their product data.
For  product developers, this means fast, reliable access  to  the
application  used  to  create them. Managers  can  accurately  and
reliably  access  information about  work-in-process  as  well  as
documentation   of  the  entire  product  life  cycle.   Metaphase
Enterprise(TM)   is  compatible with client/server environments 
with distributed design and engineering departments.

Services

The  Company  provides customers with process  automation  and
implementation services as well as technical applications software
support,  maintenance  and training.  Building  on  its  extensive
knowledge   of   mechanical  design  automation   technology   and
engineering  applications  and processes,  the  Company  offers  a
"total  solution"  by  providing process automation  and  software
implementation  services for I-DEAS and PDM software.  Engineering
consulting  services  assist  in the  optimization  of  customers'
product  design  and in the improvement of customers'  development
process.   In  addition, advanced training and knowledge  transfer
are provided to customers to enable them to integrate and optimize
their MDA and PDM investment. Advanced computer simulation methods
and in-depth application expertise are utilized for traditional or
highly  specialized computer technologies including design audits,
product design, troubleshooting and engineering process design.


Services - Continued

Technical   applications  software  support  and  maintenance
service   provides  telephone  "hotline"  support   and   software
maintenance  corrections  for  licensed  products  and   features.
Software enhancement versions are also released during the term of
the  contract  with  documentation updates.   In  addition,  other
services  are  provided that enhance and maintain  the  customer's
software investment.

The  Company  provides basic training for each major  software
package.   Advanced  training classes  are  offered  for  selected
applications to support continued growth of customer skills and to
increase the productivity of those who utilize SDRC software.

Heterogeneous Environment/Platforms

The Company's software is available on the leading engineering
workstations using UNIX and Microsoft NT operating systems.   This
hardware  platform independence allows the Company's customers  to
operate  in  a  heterogeneous environment,  selecting  and  adding
software modules for a broad range of hardware systems based  upon
their  unique requirements.  The productivity benefits of leading-
edge   capabilities,  such  as  unprecedented  ease-of-use,  team-
oriented  product  development, best-in-class design,  performance
simulation and integrated applications, have increased the  number
of potential users who can utilize these tools.

Sales Channels

The  Company  markets  its products  and  services  through  a
worldwide  direct  sales  and support  force.   In  addition,  the
Company  utilizes  distributors, value-added resellers  and  other
independent representatives for its selling and marketing efforts.
Telemarketing  is  also used to complement  both  the  direct  and
indirect  marketing channels.  The Company employs highly  skilled
engineers  and  technically  proficient  sales  support  personnel
people,  capable of understanding the sophisticated needs  of  the
customer.  The  Company  has an established  relationship  with  a
distributor in Japan, Information Services International -  Dentsu
Ltd.,  which accounted for approximately 11%, 12% and 13%  of  the
Company's   consolidated  revenues  in  1997,   1996   and   1995,
respectively. Revenues from the Ford Motor Company represented 14%
and 11% of consolidated revenue in 1997 and 1996.

Seasonality

Historically,   the   Company  has   generally   realized   a
disproportionate amount of its quarterly revenue during  the  last
month  of each quarter, and realized a disproportionate amount  of
its  total annual revenue during the fourth quarter of each  year.
Future  quarterly  results could be impacted by  factors  such  as
order  deferrals,  a slower growth rate in the  market,  increased
competition  or adverse changes in general economic conditions  in
any  of  the  countries in which the Company does  business.   Any
shortfall  in  revenue  or earnings could have  an  immediate  and
significant  adverse effect on the trading price of the  Company's
stock in any given period.

Competition

The  market  for  the Company's software products  is  highly
competitive  and  the  Company expects  competitive  pressure  to
increase  in  the future.  To remain technologically competitive,
the  Company continually enhances its existing software  products
and pursues the development and introduction of new products.

The  Company  competes against products  in  the  CAD/CAM/CAE
market   including  the  CATIA  products  marketed  by  IBM   and
Dassault,  the  UNIGRAPHICS product marketed by  EDS,  the  CADDS
product   marketed  by  Computervision  Corporation,  the   I/EMS
product  marketed by Intergraph Corporation and the  Pro/ENGINEER
product  marketed by Parametric Technology Corporation.   In  the
PDM  market,  the Company competes against such products  as  the
Optegra  product marketed by Computervision Corporation, products
marketed  by  SAP,  the  IBM  Product Manager  marketed  by  IBM,
Information  Manager marketed by EDS and others.   The  Company's
future  success  will depend in a large part on  its  ability  to
further  penetrate its installed customer base  as  well  as  the
installed customer base of its competitors.

The principal competitive factors in the CAD/CAM/CAE and  PDM
market   for   software   and  related   services   are   product
functionality,   product   breadth   and   integration,   product
performance, product quality, hardware platform support, ease  of
product  use,  price, customer support, technical reputation  and
size of installed customer base.  The Company's employees are  an
important  component  of the SDRC "total  solution"  approach  in
providing  MDA  and  PDM software tools and  related  engineering
consulting  services  to customers.  The Company's  success  will
depend in part on its ability to attract and retain a work  force
whose skills are in great demand.

Other Information

Segment and geographic information is included on page 50  of
the  Company's Annual Report to Shareholders for the  year  ended
December 31, 1997, which is incorporated herein by reference.

As is customary throughout the software industry, the Company
relies  both  on  copyrights and trade  secrecy  for  proprietary
protection  of  its  software products.   The  duration  of  such
protection  is  considered to be adequate  given  the  constantly
changing  nature  of the business. The Company  also  utilizes  a
number  of  trademarks,  both  registered  and  otherwise,   with
respect to its software products.  The proprietary status of  its
trademarks  lasts indefinitely, as long as the trademarks  remain
in use.

The  Company  does  not anticipate any  significant  problems
associated  with  the  year 2000 consequences  for  its  internal
software  or  the software which it markets.  The software  which
will  be  the  basis of the Company's new information  management
system  is  year 2000 compliant.  The Company's primary  software
offerings are also year 2000 compliant.

The  Company typically ships product within two  weeks  after
acceptance  of  a  customer purchase order  and  execution  of  a
license  agreement.  A substantial portion of quarterly shipments
tend  to  be made in the last month of the quarter.  The  Company
does  not believe that backlog is indicative of potential revenue
for any future period.

As  of  December  31, 1997, the Company had  2,067  full-time
employees,  of whom 565 were engaged in research and development,
1,081  in  sales,  services support and  marketing,  and  421  in
general management and administration.
<PAGE>

<TABLE>

Item 2:   Properties

The  following  table sets forth certain information,  as  of
December 31, 1997, with respect to principal properties in  which
the Company and its subsidiaries conduct their operations:

<CAPTION>



                        Space Used 
                            In
              Ownership Operations 
 Location     Or Lease   (Square   
                          Feet)    Principal Activities
<S>           <C>       <C>       <C>
Cincinnati,   Lease     221,000   Corporate Headquarters Office
Ohio          (expires            Facilities, Technical Development
              2011)               Center, and Administration

Cincinnati,   Lease      93,000   Sales and Marketing Office
Ohio          (expires            Facilities
               2007)

Dearborn,     Lease      39,000   Technical Development Center,
Michigan      (expires            Support and Training Facilities
              2000)

Minneapolis,  Lease      27,000   Office Facilities  and  Technical
Minnesota     (expires            Development Center
              2000)

Minneapolis,  Lease      27,000   Sales Office Facilities and
Minnesota     (expires            Technical Development Center
              1998)

San Diego,    Lease      25,000   Sales Office Facilities
California    (expires  
              1999)

Eugene,       Lease      22,000   Office   Facilities  and  Technical
Oregon        (expires            Development Center
              1999)

Frankfurt,    Lease      19,000   Central Europe Office Facilities
Germany       (expires  
              1999)

Paris,        Lease      18,000   Southern Europe Office Facilities
France        (expires  
              2002)

Madison       Lease      16,000   Sales  Office Facilities  and  Test
Heights,      (expires            Center
Michigan      2000)

Hitchin,      Lease      15,000   European    Headquarters     Office
England       (expires            Facilities
               2017)

Seattle,      Lease      12,000   Technical Development Center,
Washington    (expires            Support and Training Facilities
               2002)

Tokyo,        Lease       8,000   Technical Support Office Facilities
Japan         (expires
               1999)

Munich,       Lease       7,000   Central Europe Development
Germany       (expires            Facilities
               2001)

New Delhi,    Lease       6,000   Technical Support Office Facilities
India         (expires
               2000)

Seoul,        Lease       3,000   Sales  and Technical Support Office
South Korea   (expires            Facilities
               1998)

</TABLE>

<PAGE>
Management of the Company considers the above properties  to
be adequate and suitable for present purposes, but will continue
to  evaluate  the  need for additional facilities  to  meet  the
continued growth of the business.

Item 3:  Legal Proceedings
 
 
The  Company  is  not a party to any litigation  other  than
ordinary  routine  litigation incidental  to  its  business.
While  the outcome of these ordinary, routine legal  matters
cannot  be  predicted  with certainty, management  does  not
believe that the outcome of any of these legal matters  will
have a material adverse effect on the Company's consolidated
results of operations or consolidated financial position.
 
Item 4:  Submission of Matters to a Vote of Security Holders
 
None.
 
Additional Executive Officers of the Registrant (at March 18, 1998)

Item:

Name               Age    Position

William J. Weyand   53    Chairman of the Board, President and Chief
                          Executive Officer
Mark C. Goldstein   41   Vice President, Products Group
John A. Mongelluzzo 39   Vice President, Secretary and General
                          Counsel
Robert M. Nierman   53   Executive Vice President and Chief
                          Operating Officer
Bryan M. Valentine  50   Vice President, Human Resources
Jeffrey J. Vorholt  45   Vice President, Chief Financial Officer
                          and Treasurer

Mr.  Weyand  has  served  as President  and  Chief  Executive
Officer  since he joined the Company in June 1997.  He has  served
as  Chairman of the Board since March 1998.  From April 1995 until
June   1997,   he  was  Executive  Vice  President   of   Measurex
Corporation  where he had worldwide responsibility for  all  sales
and  customer  service operations.  While at Measurex Corporation,
Mr.  Weyand had been Senior Vice President of Worldwide Sales  and
Service  from  December 1994 to April 1995; President,  North  and
South  America  from  February  to  December  1994;  Senior   Vice
President,  U.S.  and  Canada  Sales  and  Service  from  1993  to
February 1994; Senior Vice President, U.S. Sales and Service  from
1991 to 1993.

Mr.  Goldstein  has served as Vice President, Products  Group
since  January 1998.  From July 1997 until January 1998, he served
as  Vice  President, I-DEAS, Product Development.   From  December
1995  to July 1997, he served as Vice President, SDRC Ford Program
Office.   Prior to assuming that role, Mr. Goldstein  was  a  Vice
President in the Company's Product Development group.

Mr.  Mongelluzzo has served as Vice President, Secretary  and
General  Counsel  since October 1991.  From  January  1,  1987  he
served  as Secretary and Counsel for the Company.  In May 1986  he
joined  the  Company as Assistant Counsel, was  elected  Assistant
Secretary  in October 1986 and Secretary in December  1986.   From
February  1985  until May 1986, Mr. Mongelluzzo  was  employed  as
Staff Attorney for the Ohio Department of Commerce.

Mr.  Nierman has served as Executive Vice President and Chief
Operating   Officer  since  January  1998  and  served   as   Vice
President,  of  the  Company's  Metaphase  Technology  Group  from
February  1997  until January 1998.  Prior to the  acquisition  of
Metaphase  Technology, Inc. in January 1997 by SDRC,  Mr.  Nierman
was  President and CEO of Metaphase Technology, Inc.  since  1992.
Mr.  Nierman's  previous experience included a variety  of  senior
executive  positions in the sales and marketing  organizations  of
Control Data Systems, Inc.

Mr.  Valentine has served as Vice President, Human  Resources
since  October  1995  and became a board-elected  officer  of  the
Company  in  December 1995. Prior to accepting his  position  with
the  Company,  he was employed by AM International, Inc.  as  Vice
President, Human Resources from October 1986 to June 1995.

Additional Executive Officers of the Registrant (at March 18, 1998)
- - - Continued
Item:

Mr.  Vorholt  has served as Vice President,  Chief  Financial
Officer  and Treasurer since February 1995.  Prior to  that  time,
Mr.  Vorholt was the Vice President and Controller since  December
1994.   Prior to accepting his position with the Company,  he  was
employed  by  Cincinnati  Bell Telephone Company  as  Senior  Vice
President - Accounting and Information Systems from 1991  -  1994,
and  by  Cincinnati Bell Information Systems, Inc. as Senior  Vice
President  and Director, 1989 - 1991.   Mr. Vorholt is a  licensed
Certified Public Accountant and Attorney-at-Law.

                                PART II
                                   
Item 5:    Market  for  Registrant's  Common  Equity  and  Related
Shareholder Matters

In  December,  1997,  the  Company issued  one  million  five
hundred  thousand shares of common stock to the  shareholders  of
Lookout   Drafting,   Inc.   and  Computer   Aided   Systems   of
Engineering, Inc. in exchange for all of the stock of  these  two
companies.   The  securities are exempt from  registration  under
regulation  D,  rule 506 of the Securities Act.   The  securities
were  subsequently  registered on  February  3,  1998  per  prior
agreement with the security holders.

The  Company's  common  stock is listed  and  traded  on  the
National   Association  of  Securities  Dealers,  Inc.  Automatic
Quotation    (NASDAQ)   National   Market   System.    Additional
information,  which  appears on page 51 of the  Company's  Annual
Report  to Shareholders for the year ended December 31, 1997,  is
incorporated by reference in this Form 10-K Annual Report.

Item 6:   Selected Financial Data

The selected financial data for the five years ended December
31, 1997, which appears on page 26 of the Company's Annual Report
to  Shareholders  for  the  year  ended  December  31,  1997,  is
incorporated by reference in this Form 10-K Annual Report.

Item 7:    Management's Discussion and Analysis of Financial 
Condition and Results of Operations

The   Management's  Discussion  and  Analysis  of  Financial
Condition and Results of Operations, which appears on pages 27 to
32  of  the Company's Annual Report to Shareholders for the  year
ended  December  31, 1997, is incorporated by reference  in  this
Form 10-K Annual Report.

Item 8:   Financial Statements and Supplementary Data

The   Consolidated  Financial  Statements  and   Report   of
Independent  Accountants appearing on  pages  33  to  51  of  the
Company's  Annual  Report  to Shareholders  for  the  year  ended
December 31, 1997, are incorporated by reference in this Form 10-
K  Annual Report.  (The 1997 Annual Report to Shareholders is not
to be deemed filed as part of this Form 10-K Annual Report except
for   portions  thereof  which  are  expressly  incorporated   by
reference.)

Item 9:    Changes  in and Disagreements with Accountants on
Accounting and Financial Disclosures

None.

                               PART III

The information required by Item 10. "Directors and Executive
Officers  of the Registrant," Item 11.  "Executive Compensation,"
Item  12.   "Security Ownership of Certain Beneficial Owners  and
Management,"  and  Item 13.  "Certain Relationships  and  Related
Transactions"  is  incorporated by  reference  to  the  Company's
definitive  Proxy Statement dated April 1, 1998 which relates  to
its May 7, 1998 Annual Meeting of Shareholders.

                                PART IV

Item 14:   Exhibits, Financial Statement Schedules, and Reports on
Form 8-K

a.1.  Financial Statements

The  following Consolidated Financial Statements and  related
notes   of   Structural   Dynamics   Research   Corporation   and
subsidiaries,  included in the Annual Report to Shareholders  for
the  year  ended December 31, 1997, are incorporated by reference
in Item 8 of Part II:

Report of Independent Accountants.
Consolidated  Statement of Operations - Years ended December  31,
1997, 1996 and 1995.
Consolidated Balance Sheet - December 31, 1997 and 1996.
Consolidated  Statement of Shareholders'  Equity  -  Years  ended
December 31, 1997, 1996 and 1995.
Consolidated  Statement of Cash Flows - Years ended December  31,
1997, 1996 and 1995.
Notes to Consolidated Financial Statements.

a.2.  Financial Statement Schedules

The  Report  of  Independent  Accountants  on  the  financial
statement  schedule  of Structural Dynamics Research  Corporation
and subsidiaries appears immediately prior to Schedule II in this
Form 10-K.

The  following  financial statement  schedule  of  Structural
Dynamics  Research Corporation and subsidiaries  is  included  in
this Item 14:

Schedule
II          Valuation and qualifying accounts

All other schedules have been omitted because the information
either has been shown in the Consolidated Financial Statements or
notes  thereto,  or  is  not applicable  or  required  under  the
instructions.

Financial  statements  of  Estech Corporation  in  which  the
Company owned an equity interest of 30% as of December 31,  1997,
have been omitted because the registrant's proportionate share of
the  income  or  losses from continuing operations before  income
taxes,  and total assets of such company is less than 20% of  the
respective  consolidated  amounts,  and  the  investment  in  and
advances  to each company is less than 20% of consolidated  total
assets.

a.3.  List of Exhibits:

                  Exhibit                    Reference

3.01  Amended  Articles  of  Incorporation of        
Registrant, including subsequent updates       Note (f)

3.02  Amended    Code    of   Regulations of   Note (a)
Registrant

4     Shareholder Rights Plan                  Note (b)

10.01 Structural  Dynamics Research Corporation        
Tax Deferred Capital  Accumulation Plan dated 
January 1, 1989                                Note (e)

10.02 Structural  Dynamics Research Corporation        
1991 Employee  Stock Option Plan               Note (d)

10.03 Structural  Dynamics Research Corporation        
1996 Directors' Non-Discretionary Stock Option
Plan                                           Note (h)

10.04 Joint Venture Agreement between        
Structural Dynamics Research  Corporation  and
Nissan  Motor Co., Ltd.                        Note (c)

10.05 Lease agreement (including amendments #1        
and   #2)  between  Park  50  Development        
Company    Limited    Partnership     and
Structural Dynamics Research Corporation       Note (e)

Item 14.   Exhibits, Financial Statement Schedules, and Reports on
Form 8-K  (continued)

a.3.  List of Exhibits:


                     Exhibit                    Reference

10.06 Structural  Dynamics Research Corporation        
      1994 Long-Term Stock Incentive Plan          Note (g)
                                                             
10.07 Agreement   of   Merger   and   Plan   of    Note (j)
      Reorganization

10.08 Acquisition Agreement                        Note (k)

10.09 Incentive   Compensation   Plan;    filed        
      herewith
                                                             
10.10 Employment  Agreement  with  William   J.        
      Weyand   dated  June  30,   1997;   filed
      herewith
                                                             
10.11 Form  of Severance Compensation Agreement        
      contracted  with each named Executive  of
      the Company; filed herewith
                                                             
10.12 Non-Qualified      Unfunded      Deferred        
      Compensation  Plan for outside  directors
      of     Structural    Dynamics    Research
      Corporation; filed herewith
                                                             
10.13 1998 Long-Term Stock Incentive Plan          Note (l)

10.14 Agreement    of    Merger    and     Plan    Note (m)
      Reorganization
                                                             
11    Statement  regarding computation  of  per    Note (i)
      share earnings
                                                             
13    Portions   of   the  Annual   Report   to        
      Shareholders for the year ended  December
      31, 1997, filed herewith
                                                             
21    Subsidiaries  of  the  Registrant;  filed        
      herewith
                                                             
23    Consent   of   Independent   Accountants;        
      filed herewith
                                                             
27    Financial Data Schedules                         

           NOTE REFERENCE:

(a)  Incorporated   by  reference  to   the   Company's
     Registration Statement No. 33-16541, which was originally
     filed  on  August  17,  1987  and  became  effective   on
     September  29, 1987. Amendments incorporated by reference
     to  the Company's definitive Proxy Statements dated March
     26, 1996 and March 25, 1997.

(b)  Incorporated by reference to the Company's report on
     Form 8-K filed on August 3, 1988.

(c)  Incorporated by reference to the Company's report on
     Form 10-Q dated May 12, 1989.

(d)    Incorporated   by  reference  to   the   Company's
       definitive Proxy Statement dated March 11, 1991.

(e)  Incorporated by reference to an exhibit filed in the
     Company's Annual Report on  Form 10-K for the year  ended
     December 31, 1990.

(f)  Incorporated by reference to the Company's Annual Report on
     Form 10-K for the year ended December 31, 1993 as originally
     filed on March  11, 1994.
           
(g) Incorporated by reference to the Company's definitive Proxy
    Statement dated March 16, 1994.  Amendment to the plan is
    incorporated by reference to the Company's definitive Proxy
    Statement dated March 26, 1996.

           NOTE REFERENCE (continued):

(h)  Incorporated by reference to the Company's definitive Proxy
     Statement dated March 26, 1996.
           
(i) Information regarding computation of per share earnings is
    included on page 41 of the Company's Annual Report to
    Shareholders for the year ended December 31, 1997.

(j) Incorporated by reference to the Company's Form 8-K effective
    December 31, 1997 pertaining to the acquisition of Lookout
    Drafting, Inc. and Computer Aided Systems for Engineering, Inc.

(k) Incorporated by reference to the Company's Form 8-K effective
   January 22, 1997 pertaining to the acquisition of Metaphase
   Technology, Inc.

(l)Incorporated by reference to the Company's definitive Proxy
   Statement dated April 1, 1998.

(m)  Incorporated by reference to the Company's Registration
     Statement on Form S-4 effective on May 28, 1996 pertaining to
     the acquisition of Camax Manufacturing Technologies, Inc.

b. Reports on Form 8-K
       None.

c.   Exhibits as required by Item 601 of Regulation S-K

The Company hereby files within this Annual Report on
Form 10-K, Exhibits in the List of Exhibits.

d.    Financial Schedules

The  Company hereby files with this Annual  Report
on Form 10-K, the financial statement schedule listed in
item 14.a.2.
                                   
SIGNATURES

Pursuant  to  the requirements of Section  13  or
15(d) of the Securities Exchange Act of 1934, the registrant has 
duly caused  this  report  to be signed on its behalf by  the 
undersigned, thereunto duly authorized.



                            STRUCTURAL DYNAMICS RESEARCH CORPORATION



March 23, 1998              By /s/Jeffrey J. Vorholt
      (Date)               Jeffrey J. Vorholt,
                            Vice President, Chief Financial Officer
                           and Treasurer


Pursuant to the requirements of the Securities Exchange Act
of 1934, this report has been signed below by the following persons
on behalf  of  the  Registrant and in the capacities  and  on  the 
dates indicated.

/s/William J. Weyand     March 27, 1998 
William J. Weyand        (Date)    
Chairman of the Board,            
President and Chief Executive Officer
(Principal Executive Officer)


/s/Jeffrey J. Vorholt    March 23, 1998  
Jeffrey J. Vorholt       (Date)    
Vice President,                     
Chief Financial Officer and Treasurer
(Principal Financial and Accounting Officer)

/s/William P. Conlin        March 24, 1998
William P. Conlin             (Date)     
Director                             

/s/Bannus B. Hudson         March 24, 1998
Bannus B. Hudson              (Date)   
Director                    

/s/John E. McDowell      March 27, 1998
John E. McDowell        (Date)
Director

/s/James W. Nethercott      March 24, 1998
James W. Nethercott           (Date)
Director

/s/Arthur B. Sims           March 24, 1998
Arthur B. Sims                (Date)
Director

/s/Gilbert R. Whitaker, Jr. March 27, 1998
Gilbert R.Whitaker, Jr.        (Date)
Director

Exhibit 10.09

                                 SDRC
                      Incentive Compensation Plan

I.   Plan Objectives

A.To provide competitive levels of compensation to enable SDRC  to
attract  and  retain the key contributors, needed to  successfully
manage the business.

B.To  provide  annual incentive opportunities  linked  to  meeting
predetermined corporate and individual/functional goals.

II.  Plan

It  is  SDRC's  plan  to  pay  base salaries  and  annual  Incentive
Compensation Plan (ICP) awards which are competitive and  which  are
substantially   in   accordance  with  the   following   objectives.
Naturally,  length of service and performance in the  position  will
impact individuals differently.

Element                Objective

Base Salary              Middle of the range of Comparable Companies
ICP Award               Up to 90th percentile for outstanding
                        performance
Total Cash Compensation 75th percentile for outstanding performance

Under  this plan, each participant's annual ICP award will be  based
first on the degree to which SDRC achieves its goals and then on the
degree  to which the participant contributed to achievement of  that
goal as measured by his or her individual performance.

III. Eligibility

Participants  in  the  ICP are to be selected  from  that  group  of
employees  whose  activities  are  determined  by  the  Compensation
Committee to have a significant impact on SDRC's  results.

IV.  Target Bonus Pool

Each  plan  year a target bonus pool will be established based  upon
specific  performance measures approved by the Board  of  Directors.
This  will include a test of reasonableness for incentive pay  as 
a percentage of pre-tax income.

The  target bonus pool is the sum of individual participants' awards
at target performance levels.  Individual bonus targets will vary as
a percent of base annual salary at target.

V.   Awards

Without  prior Compensation Committee and Board approval, no payouts
will   be   made  under  this  plan  unless  the  minimum  financial
performance goals set by the Board of Directors have been met.

Upon reaching the threshold performance goals, a participant will be
eligible  for  up to 50% of his or her target bonus.   Actual  bonus
payments  will  be interpolated between threshold  (50%)  --  target
(100%)  -- outstanding (150%-200%) and will not exceed 200%  of  the
target bonus.

VI.  Individual Performance

Individual  participants' bonus awards may  be  adjusted  upward  or
downward by up to 20% depending upon individual performance, as long
as the total bonus pool is not increased.

VII. Approval and Timing of Award Payouts

No  participant shall have any claim or right to be granted an award
under this plan.   Neither the plan nor any action taken pursuant to
the  plan shall be construed as giving to any employee the right  to
be  retained in the employ of the Corporation.  Except as  otherwise
provided  herein,  the Compensation Committee of  the  Corporation's
Board  of Directors ("Compensation Committee") shall have full power
and  authority  to  interpret,  construe  and  administer  the  plan
including the right to adjust the amount payable under any award  to
reflect  any  special circumstances that the Compensation  Committee
deems  relevant.  All approved award payments will be made no  later
than  sixty  (60) days after the end of the award fiscal year,  with
exception for administrative difficulties.

VIII.  Administrative Decisions & Procedures

A.The plan year will be the same as the Company's fiscal year.

B.Current Awards

All awards will be paid in cash.

C.Salary

The  salary of each participant on January 1st of the plan year
will be used as the salary of record for all calculations.

D.Change in Status During the Plan Year

1.   New Hire, Transfer, Promotion (into and within the plan)

A newly-hired employee or an employee transferred or promoted
during the plan year to a position qualifying for participation
may  receive  a pro rata award based on the percentage  of  the
plan year (actual months/full year times the amount granted for
a  full-year award for that position) the employee  is  in  the
participating position.

2.   Discharge

An  employee  discharged during the plan year shall  not  be
eligible for an award, even if his or her severance arrangement
extends past year-end.

3.   Resignation

An  employee  must be an active employee  as  of  the  bonus
payment  date  to  be eligible for an award.  An  employee  who
resigns or is terminated prior to the payment date will not  be
entitled to an award.

4.   Death, Disability, Retirement, Leave of Absence

An  employee whose status as an active employee  is  changed
during  the plan year for any of the reasons cited may, at  the
discretion  of  the Compensation Committee, be eligible  to  be
paid for a pro rata award.

E. Miscellaneous

1.    The Compensation Committee shall have the right to modify
the plan from time to time.

2.   The decision of the Compensation Committee with respect to
any  issues  concerning individuals selected  for  awards,  the
amount,  terms,  form  and  time  of  payment  of  awards   and
interpretation of any plan guidelines or requirement  shall  be
final and binding.

3.    By acceptance of an award, each employee agrees that such
award  is special additional compensation and that it will  not
affect  any  employee  benefit, e.g., life  insurance,  savings
plan,  etc.,  in  which  the employee  participates  except  as
provided in paragraph 4 below.

4.   Payments of awards made under the plan will be included in
the employee's compensation for purposes of the 401 (k) plan.

5.    The  receipt of an award shall not give an  employee  any
right  to  continued  employment and the  right  and  power  to
dismiss  any employee is specifically reserved to the  Company.
The  receipt  of an award shall not entitle an employee  to  an
award with respect to any subsequent plan year.

6.    When  a  performance goal is based on income, it  may  be
necessary   to  exclude   significant  non-budgeted   or   non-
controllable gains or losses from actual results  or   to  make
adjustments  for stock splits or stock dividends  in  order  to
properly measure performance.  The Compensation Committee  will
decide  those  items  that   shall be considered  in  adjusting
actual results.

Exhibit 10.10

                         EMPLOYMENT AGREEMENT

THIS  AGREEMENT  is  made  as of the 19th day of  June,  1997, 
between STRUCTURAL  DYNAMICS  RESEARCH CORPORATION, an  Ohio 
corporation  with principal   offices  at  2000  Eastman  Drive, 
Milford,   Ohio   45150 (hereinafter called the "Company") and
WILLIAM J. WEYAND, whose address is  5290  North Powers Ferry Road,
Atlanta, Georgia 30327  (hereinafter called "Executive"), with
regard to employment of the Executive by  the Company.

1.    (a)   During  the period of employment under this Agreement, 
the Company agrees to employ Executive and Executive agrees to 
serve the  Company,  including its subsidiaries, in a senior 
executive capacity  with  such  title and duties as may  be  fixed 
by  the Company from time to time, but consistent with, and
initially  as President  and Chief Executive Officer of the Company. 
Executive acknowledges  that  he  will  serve  in  that  capacity 
at   the  discretion  of the Board of Directors of the Company and 
may  be assigned to other senior executive positions during the 
term  of  this Agreement.

(b)  During the period of employment under this Agreement, Executive
also agrees to devote to the Company's business and affairs his full
business  time and attention, so as to assure full and  efficient
performance of his duties hereunder; to give and devote his best and
loyal efforts and skills to the Company; and, in all other respects,
to do his utmost to enhance the Company's welfare.  During the term
of this  Agreement, Executive shall not, without the Company's prior
written consent, engage or participate, directly or indirectly, in
any other  business as a sole proprietor, partner, employee,
officer,shareholder, trustee, advisor or consultant, or accept
appointment or years  or fractional years remaining in the initial
term of  this agreement, or (ii) 100% of his then current annual
salary and his  annual   bonus  for  the  fiscal  year  preceding 
the  year   of  termination.

The applicable termination payment under this Section 3 shall  be
payable in 12 equal monthly installments on the last day of  each
month  beginning with the month immediately following termination
of  the Agreement, and Executive shall not be required to seek or
accept  other  employment  while receiving  such  payment.   Upon
request  by Executive, the Company also will continue to  provide
health  and  dental insurance coverage after such termination  of
employment,  similar to that provided to its salaried  employees,
in  accordance with the requirements of the Consolidated  Omnibus
Budget Reconciliation Act of 1985 (COBRA).

4.   The   Company   and  Executive  have  entered  into  a  
Severance Compensation Agreement dated of even date herewith (the
"Severance Compensation Agreement") which provides that Executive
shall have the right to terminate his employment for Good Reason
following a Change of  Control,  as  provided and defined in such
Severance Compensation  Agreement.   In the event Executive shall
exercise his  right  to terminate  his  employment for Good Reason 
under  the  Severance Compensation Agreement, this Agreement shall
also terminate.   If  Executive shall terminate his employment for
Good Reason pursuant to the Severance Compensation Agreement and
becomes entitled to payments thereunder, he will not be eligible to
receive termination payments pursuant to Section 3 of this
Agreement.

5.    The  Company  agrees  to pay Executive during  the  term  of 
his employment  an annual salary of not less than $400,000, 
prorated in  the partial fiscal year 1997, adjusted by annual
increases as provided  in  the next succeeding sentence and payable 
in  equal monthly  installments; provided, however, that if this 
Agreement is  terminated  due  to Executive's death or disability, 
by  the Company  for  Cause  or  by  mutual agreement  or  the 
Executive  terminates  for  other  than  Good  Reason  under  the 
Severance Compensation Agreement, Executive's salary shall be 
prorated  to the  date  of  such  termination.  Executive's  salary 
shall  be reviewed  by the Compensation Committee of the Board of
Directors  each  year  of  the  term  hereof and may  be  increased 
at  the  discretion  of the Board of Directors when warranted  by 
Company  performance.  Executive also will receive an initial stock
option award of 200,000 shares of the Company's common stock
pursuant to the  Company's  1994  Long-Term Performance  Plan  (the 
"Plan"), effective  on the date of commencement of Executive's
employment, vesting in four annual increments of 50,000 shares each,
with the first  such increment becoming exercisable on February 28, 
1998, and  the remaining three increments becoming exercisable  on 
the three  successive anniversaries of February 28, 1998.  
Executive also  will  receive a supplemental stock option award of 
150,000 shares  of the Company's common stock under the Plan,
vesting  in  three  annual  increments of 50,000 shares each, with 
the  first such increment becoming exercisable on February 28, 2002,
and the two   remaining  increments  becoming  exercisable  on  the 
two successive anniversaries of February 28, 2002, provided 
however, that  in  the  event Executive has not purchased at least 
20,000  shares  of  the Company's common stock on the open market 
either prior  to  or  within  six months following the  commencement 
of employment  hereunder, all options under the  supplemental  stock
option  award  shall  be  forfeited and terminate.   Both  option
awards  will be granted for the standard ten year term under  the
Plan,  and  all other terms and conditions of the plan  shall  be
applicable.  Executive will receive four weeks paid vacation each
year.   In  addition, Executive shall be entitled to participate,
on a basis and to the extent consistent with his senior executive
position, in any deferred compensation program, retirement  plan,
stock  option  plan, group insurance and other  so-called  fringe
benefit  programs from time to time in force for the  benefit  of
Company employees generally and/or for any group of employees  of
which  Executive  is  a  member,  provided  that  he  meets   the
eligibility requirements of any such program or plan.  Summary of
the benefits plans and programs currently in force is attached as
Exhibit A.  In addition, the Company will provide (i) tax-covered
allowance  of  $2,000 per month for financial  planning,  medical
reimbursement, auto and club membership dues, (ii) up to  $15,000
of  the initiation fees for a country club membership, and  (iii)
initiation and dues of a downtown business club.

6.   In  addition to Executive's annual salary set forth in  Section 
5  above, Executive may earn incentive compensation in each of the
fiscal years of the Company during the term hereof, equal to an
amount of up  to 120% of annual salary for each such fiscal year,
pursuant to the  Company's Executive Incentive Compensation plan. 
Executive  will receive the payments of incentive compensation upon
distribution of  executive  bonuses for each fiscal year.  The basis
for incentive compensation for each such fiscal year shall be
annually determined unless the Company's Executive Incentive
Compensation Plan is modified for all of the group of senior
executive employees of which Executive is a member.

7.    If, during initial term or renewal term of this Agreement,
Executive shall become permanently disabled so as to be unable to
substantially perform his duties and responsibilities hereunder
for a period of six consecutive months ("Disability"), this
Agreement shall terminate at the end of such six-month period.

If Executive and the Company are unable to agree as to whether or
not  Executive  is permanently disabled so as  to  be  unable  to
substantially perform his duties and responsibilities  hereunder,
the  question of Disability shall be submitted to three  doctors,
one  of  whom  shall  be  appointed by  Executive  or  his  legal
representative, one by the Company and the third by the first two
appointed, and the decision of any two of them shall be final and
binding.   If  the  question of Disability is  raised,  Executive
agrees to submit to medical examination of such three doctors and
to  permit the Company to have access to their findings, provided
that the Company shall bear all costs of the medical examinations
and  preparation  of  the medical reports by  the  three  doctors
required for the determination of Disability.

8.   In  the  event  of  the sale of all or substantially  all  of 
the Company's  assets to another corporation (hereinafter called 
the "Assignee"), the Company shall assign all of its right, title
and interest under this Agreement to the Assignee, and shall require
such Assignee by agreement in form and substance satisfactory  to 
the Executive, expressly, absolutely and unconditionally to assume
and agree to perform all of the terms and conditions and provisions
of this Agreement in the same manner and to the same extent that
Company would be required to perform them if the assignment had not
taken place.

The  Company  represents  that in the  event  of  the  merger  or
consolidation   of   the   Company   into   another   corporation
(hereinafter  called  the  "Successor Corporation"),  all  right,
title  and interest of the Company under this Agreement  and  the
Company's  obligations to the Executive hereunder shall  transfer
by operation of law to the Successor Corporation.

As  used  in this Agreement, "Company" shall mean the Company  as
hereinbefore  defined  and any Assignee of  its  business  and/or
assets  as  aforesaid which executes and delivers  the  Agreement
provided for in this Section 8 or any Successor Corporation which
becomes  bound by all the terms and provisions of this  Agreement
by operation of law.

9.    The  Company  may terminate this Agreement for Cause.   Cause 
is defined   as   a  material  breach  of  this  Agreement,   fraud,
misappropriation, theft or embezzlement of the  Company's  assets
or   intentional  violations  of  law  or  Company  policies   by
Executive.   In  the event the Company terminates this  Agreement
for  Cause,  or in the event Executive terminates this  Agreement
other  than  for Good Reason, the Company shall pay to  Executive
only  the base salary and benefits accrued prior to the  date  of
his  termination and Executive shall have no right to receive any
compensation   or  any  benefits  for  any  period   after   such
termination.

10.   Any  termination by the Company for Cause or by the Executive
for  Good  Reason under the Severance Compensation Agreement shall 
be communicated  in  writing  to the other  party  by  a  notice  of
termination  (the  "Notice  of  Termination").   The  Notice   of
Termination  shall  indicate those specific  provisions  in  this
Agreement which have been violated thereby giving rise to "Cause"
or  "Good  Reason," as the case may be, and shall  set  forth  in
reasonable  detail the facts and circumstances deemed to  provide
the  basis  for termination of Executive's employment  under  the
provision so indicated.  The Notice of Termination shall  specify
that  the  party to whom the Notice of Termination  is  addressed
(the  "Receiving Party") shall be entitled to a period of 30 days
from  the  date  thereof  to  cure the  facts  and  circumstances
addressed  therein.  In the event such cure is  effected  to  the
reasonable  satisfaction  of  the party  sending  the  Notice  of
Termination  within such 30 day period, the Notice of Termination
shall  thereafter be rendered null and void ab initio.   Date  of
Termination as used herein should mean the last day of  the  cure
period  specified  above  when  no  satisfactory  cure  has  been
effected.

11.  Executive  agrees that, for the period commencing on the  date 
of termination   of   his  employment  and  ending   twelve   months
thereafter, he will not, without the prior written consent of the
Company, directly or indirectly, as sole proprietor, stockholder,
partner,   employee,   officer,   director,   trustee,   advisor,
consultant or independent contractor, or in any other  manner  or
capacity   whatsoever,  engage  or  participate  in  manufacture,
development,   advertising,   promotion,   licensing,   sale   or
distribution  of any products or services anywhere in  the  world
which  are  competitive  with  any  product  or  service  of  the
Company's,  its subsidiaries, divisions or affiliates;  Executive
understands that the provisions of this Section 11 may limit  his
ability  to  earn  a  livelihood in a  business  similar  to  the
business  of  the  Company  but nevertheless  agrees  and  hereby
acknowledges  that (I) such provisions do not  impose  a  greater
restraint  than  is  necessary  to protect  the  goodwill,  trade
secrets,  and other business interests of the Company; (ii)  such
provisions   contain   reasonable   limitations   as   to   time,
geographical area and the scope of activity to be restrained; and
(iii)  the  consideration  provided  under  this  Agreement,   is
sufficient to compensate Executive for the restrictions contained
in  this  Section 11.  In consideration of the foregoing  and  in
light  of  Executive's education, skills and abilities, Executive
agrees  that  he  will  not assert that, and  it  should  not  be
considered that, any provisions of this Section 11 preventing him
from  earning  a  living  or  otherwise  are  void,  voidable  or
unenforceable or should be voided or held unenforceable.   For  a
period  of  12  months  following  the  date  of  termination  of
Executive's  employment by the Company for any reason whatsoever,
Executive  will not, without the express written consent  of  the
Company, recruit, solicit or induce any employees of the  Company
to terminate their employment with the Company.

12.   Confidentiality:

Executive expressly covenants and agrees that he will not at  any
time,  either  during the term of this Agreement  or  thereafter,
directly or indirectly use, convey or permit the use of any trade
secrets or other proprietary and/or confidential information  of,
or  relating  to,  the  Company or any of  its  subsidiaries,  in
connection with any activity or business, except the business  of
the  Company or any such subsidiary.  Executive also agrees  that
during  the  term of this Agreement and thereafter  he  will  not
divulge  such  information  to any person,  firm  or  corporation
whatsoever, except as may be necessary in the performance of  his
duties hereunder.  The obligations of Executive contained in this
Section 12 shall not apply to any information which was known  to
the  public  at  the  time of its receipt by Executive  or  shall
become known generally to the public in any manner other than  by
an improper act of Executive.

13.   This  Agreement shall inure to the benefit of and be 
enforceable by  the Executive's personal and legal representative,
executors, administrators,  successors, heirs,  distributees, 
devisees  and legatees.   If  the  Executive dies while any amounts 
are  still payable  to  him  hereunder, all such amounts,  unless 
otherwise  provided  herein, shall be paid in accordance with the 
terms  of this  Agreement  to  the Executive's devisee, legatee,  or 
other designee  including a trust or trustee or, if there  be  no 
such designee, to the Executive's estate.

14.   For   purposes   of  this  Agreement  notices   and   all  
other communications provided for in the Agreement shall be in 
writing and  shall  be  deemed to have been duly given when
delivered  or  mailed  by  United  States certified or registered 
mail,  return receipt requested, postage prepared, as follows:

If  to the Company:
Structural Dynamics Research Corporation
2000 Eastman Drive
Milford, Ohio 45150
Attention:  John  A. Mongelluzzo, Vice President, General  Counsel 
and Secretary

If to the Executive:
William J. Weyand
5290 North Powers Ferry Road
Atlanta, Georgia 30327

or  such other address as either party may have furnished to  the
other  in writing in accordance herewith, except that notices  of
change of address shall be effective only on receipt.

15.  No  provisions  of  this  Agreement may  be  modified,  waived 
or discharged  unless  such  waiver,  modification  or  discharge 
is agreed to in writing signed by the Executive and the Company.  
No waiver  by  either party hereto at any time of any breach  by 
the other  party  hereto  of,  or compliance with,  any  condition 
or provision  of this Agreement to be performed by such  other 
party shall  be  deemed a waiver of similar or dissimilar provisions 
or  conditions  at  the same or at any prior or subsequent  time.  
No agreements  or  representations, oral  or  otherwise,  express 
or implied, with respect to the subject matter hereof have been 
made by  either  party  which  are  not set  forth  expressly  in 
this Agreement.   This Agreement shall be governed by and construed 
in  accordance with the laws of the State of Ohio.

16.  If  any  of  the  provisions  of this  Agreement  shall 
otherwise  contravene  or  be invalid under the laws of any  state 
or  other jurisdiction where it is applicable but for such
contravention  or invalidity, such contravention or invalidity shall
not  invalidate all  of the provisions of this Agreement, but rather
the Agreement shall  be reformed and construed, insofar as the laws
of the state  or  jurisdiction are concerned, as not containing the
provision or provisions,  but only to the extent that they are
contravening  or are  invalid under the laws of that state or
jurisdiction, and the rights  and  obligations  created hereby 
shall  be  reformed  and construed and enforced accordingly.


17.  No Duty to Mitigate:

In  the event of a breach of this Agreement by Employer, Executive
shall  have no duty to mitigate his damages and any amounts earned
or  received  after  such breach shall not  reduce  or  be  offset
against amounts due to Executive from Employer as a result of  the
breach.

IN WITNESS WHEREOF, the parties have executed this Agreement as of
the date first above written.

STRUCTURAL DYNAMICS RESEARCH
CORPORATION

ATTEST:

/s/Thomas F. Eberle         By   /s/John A. Mongelluzzo
Thomas F. Eberle                 John A. Mongelluzzo
                                 Vice President, Secretary  and
                                 General Counsel

EXECUTIVE


/s/William J. Weyand
William J. Weyand





Exhibit 10.11
                   SEVERANCE COMPENSATION AGREEMENT

THIS  AGREEMENT,  dated as  of                     ,  is  between
Structural  Dynamics  Research Corporation, an  Ohio  corporation
(the "Company") and                            (the "Executive").

The  Company's  Board  of Directors has  determined  that  it  is
appropriate  to  reinforce and encourage the continued  attention
and  dedication of members of the Company's management  to  their
assigned  duties  without distraction in  potentially  disturbing
circumstances arising from the possibility of a change in control
of the Company.

This  Agreement sets forth the severance compensation  which  the
Company  agrees  it will pay to the Executive if the  Executive's
employment  with  the  Company  terminates  under  one   of   the
circumstances described herein following a Change in  Control  of
the Company (as defined herein).

1.   Term.   This Agreement shall terminate, except to the extent
     that  any obligation of the Company hereunder remains unpaid
     as  of  such time, upon the earliest of (i)  June 30 of  any
     year  after  1997, provided that either party has  given  at
     least 60 days prior written notice to the other party of its
     or  his  intention  to terminate this Agreement  under  this
     clause   (i);   (ii)  the  termination  of  the  Executive's
     employment  with the Company based on death, Disability  (as
     defined  in  Section  3(b)) and Retirement  (as  defined  in
     Section  3(c)) or Cause (as defined in Section 3(d))  or  by
     the  Executive  other than for Good Reason  (as  defined  in
     Section 3(e)); and (iii) two-years from the date of a Change
     in   Control  of  the  Company  if  the  Executive  has  not
     terminated his employment for Good Reason as of such time.

2.   Change  in Control.  No compensation shall be payable  under
     this Agreement unless and until (a) there shall have been  a
     Change  in  Control of the Company, while the  Executive  is
     still  an  employee of the Company and (b)  the  Executive's
     employment  by  the  Company  thereafter  shall  have   been
     terminated  in accordance with Section 3.  For  purposes  of
     this Agreement, a Change in Control of the Company shall  be
     deemed to have occurred if:

(i)  there  shall be consummated any consolidation or  merger  of
     the Company and, as a result of such consolidation or merger
     (x)  less than 50% of the outstanding common shares and  50%
     of   the   voting  shares  of  the  surviving  or  resulting
     corporation  are owned, immediately after such consolidation
     or  merger,  by  the owners of the Company's  common  shares
     immediately  prior to such consolidation or merger,  or  (y)
     any  person  (as  such  term is used in  Section  13(d)  and
     14(d)(2) of the Securities Exchange Act of 1934, as  amended
     (the  "Exchange  Act")  shall become  the  beneficial  owner
     (within the meaning of Rule 13d-3 under the Exchange Act) of
     20%  or  more  of  the surviving or resulting  corporation's
     outstanding common shares, or

(ii) any   sale,  lease,  exchange  or  other  transfer  (in  one
     transaction or a series of related transactions) of all,  or
     substantially  all, of the assets of the  Company  shall  be
     consummated, or

(iii)      the shareholders of the Company shall approve any plan
     or  proposal  for  the  liquidation or  dissolution  of  the
     Company, or

(iv) any  person  (as  such  term is used in  Section  13(d)  and
     14(d)(2)  of  the Exchange Act) shall become the  beneficial
     owner  (within the meaning of Rule 13d-3 under the  Exchange
     Act) of 20% or more of the company's outstanding common, or

(v)  during any period of two consecutive years, individuals  who
     at  the beginning of such period constitute the entire Board
     of  Directors  shall cease for any reason  to  constitute  a
     majority  thereof unless the election or the nomination  for
     election  by the Company's shareholders of each new director
     was  approved  by  a  vote  of at least  two-thirds  of  the
     directors  then  still in office who were directors  at  the
     beginning of the period.

3.   Termination Following Change in Control.

(a)  If  a  Change in Control of the Company shall have  occurred
     while the Executive is still an employee of the Company, the
     Executive shall be entitled to the compensation provided  in
     Section 4 upon the subsequent termination of the Executive's
     employment  with  the  Company by the Executive  or  by  the
     Company  unless such termination is as a result of  (i)  the
     Executive's  death;  (ii)  the  Executive's  Disability  (as
     defined  in  Section  3(b)  below);  (iii)  the  Executive's
     Retirement  (as  defined in Section 3(c)  below);  (iv)  the
     Executive's termination by the Company for Cause (as defined
     in  Section 3(d) below); or (v) the Executive's decision  to
     terminate employment other than for Good Reason (as  defined
     in Section 3(e) below).

(b)  Disability.   If, as a result of the Executive's  incapacity
     due  to physical or mental illness, the Executive shall have
     been  absent from his duties with the Company on a full-time
     basis for six months and within 30 days after written notice
     of  termination  is  thereafter given  by  the  Company  the
     Executive   shall  not  have  returned  to   the   full-time
     performance  of  the  Executive's duties,  the  Company  may
     terminate this Agreement for "Disability."

(c)  Retirement.  The term "Retirement" as used in this Agreement
     shall  mean  termination by the Company or the Executive  of
     the  Executive's employment based on the Executive's  having
     reached age 65 or such other age as shall have been fixed in
     any  arrangement  established with the  Executive's  consent
     with respect to the Executive.

(d)  Cause.  The Company may terminate the Executive's employment
     for Cause.  For purposes of this Agreement only, the Company
     shall  have  "Cause" to terminate the Executive's employment
     hereunder  only  on the basis of fraud, misappropriation  or
     embezzlement  on the part of the Executive.  Notwithstanding
     the  foregoing,  the Executive shall not be deemed  to  have
     been  terminated for Cause unless and until there shall have
     been  delivered to the Executive a copy of a resolution duly
     adopted  by  the  affirmative vote of not less  than  three-
     quarters of the entire membership of the Company's Board  of
     Directors at a meeting of the Board called and held for  the
     purpose  (after  reasonable notice to the Executive  and  an
     opportunity for the Executive, together with the Executive's
     counsel, to be heard before the Board), finding that in  the
     good faith opinion of the Board the Executive was guilty  of
     conduct  set  forth in the second sentence of  this  Section
     3(d) and specifying the particulars thereof in detail.

(e)  Good  Reason.   The Executive may terminate the  Executive's
     employment  for Good Reason at any time during the  term  of
     this  Agreement.   For  purposes  of  this  Agreement  "Good
     Reason"  shall  mean  any  of  the  following  (without  the
     Executive's express written consent):

(i)  the  assignment  to the Executive by the Company  of  duties
     inconsistent   with   the  Executive's   position,   duties,
     responsibilities  and  status with the  Company  immediately
     prior to a Change in Control of the Company, or a change  in
     the  Executive's titles or offices as in effect  immediately
     prior  to a Change in Control of the Company, or any removal
     of  the  Executive  from  or  any  failure  to  reelect  the
     Executive  to  any of such positions, except  in  connection
     with  the  termination  of  his employment  for  Disability,
     Retirement or Cause or as a result of the Executive's  death
     or by the Executive other than for Good Reason;

(ii) a reduction by the Company in the Executive's base salary as
in effect on the date hereof;

(iii)      any  failure by the Company to continue in effect  any
     benefit  plan or arrangement (including, without limitation,
     the  Company's  retirement plan, group life insurance  plan,
     and medical, dental, accident and disability plans) in which
     the  Executive is participating at the time of a  Change  in
     Control  of  the Company (or any other plans  providing  the
     Executive  with substantially similar benefits) (hereinafter
     referred to as "Benefit Plans"), or the taking of any action
     by  the Company which would adversely affect the Executive's
     participation  in  or  materially  reduce  the   Executive's
     benefits  under  any  such  Benefit  Plan  or  deprive   the
     Executive  of  any material fringe benefit  enjoyed  by  the
     Executive at the time of a Change in Control of the Company;

(iv) any  failure  by  the  Company to continue  the  Executive's
     eligibility   to  participate  in  annual  executive   bonus
     arrangements in which the Executive is participating at  the
     time of a Change in Control of the Company (or any plans  or
     arrangements   providing  him  with  substantially   similar
     benefits) (hereinafter referred to as "Incentive Plans")  or
     the  taking  of  any  action  by  the  Company  which  would
     significantly  reduce the Executive's  opportunity  to  earn
     incentive  compensation  which  is  related  to  performance
     results  as  compared to performance exceptions periodically
     determined by the Company;

(v)  a relocation of the Company's principal executive offices to
     a  location  outside of Cincinnati, Ohio, or the Executive's
     relocation to any place other than the location at which the
     Executive performed the Executive's duties prior to a Change
     in Control of the Company, except for required travel by the
     Executive   on   the  Company's  business   to   an   extent
     substantially  consistent  with  the  Executive's   business
     travel obligations at the time of a Change in Control of the
     Company;

(vi) any failure by the Company to provide the Executive with the
     number  of  paid  vacation days to which  the  Executive  is
     entitled at the time of a Change in Control of the Company;

(vii)     any material breach by the Company of any provision  of
this Agreement;

(viii)     any failure by the Company to obtain the assumption of
     this Agreement by any successor or assign of the Company; or

(ix) any  purported  termination  of the  Executive's  employment
     which  is  not effected pursuant to a Notice of  Termination
     satisfying  the  requirements  of  Section  3(f),  and   for
     purposes  of  this Agreement, no such purported  termination
     shall be effective.

(f)  Notice  of  Termination.   Any termination  by  the  Company
     pursuant to Section 3(b), 3(c) or 3(d) shall be communicated
     by a Notice of Termination.  For purposes of this Agreement,
     a  "Notice of Termination" shall mean a written notice which
     shall indicate those specific termination provisions in this
     Agreement  relied  upon and which sets forth  in  reasonable
     detail  the  facts and circumstances claimed  to  provide  a
     basis  for  termination of the Executive's employment  under
     the provision so indicated.  For purposes of this Agreement,
     such purported termination by the Company shall be effective
     without such Notice of Termination.

(g)  Date  of Termination.  "Date of Termination" shall mean  (a)
     if   this  Agreement  is  terminated  by  the  Company   for
     Disability,  30 days Notice of Termination is given  to  the
     Executive  (provided  that  the  Executive  shall  not  have
     returned to the performance of the Executive's duties  on  a
     full-time  basis during such 30-day period) or  (b)  if  the
     Executive's employment is terminated by the Company for  any
     other  reason, the date on which a Notice of Termination  is
     given;  provided that if within 30 days after any Notice  of
     Termination  is  given to the Executive by the  Company  the
     Executive  notifies  the  Company  that  a  dispute   exists
     concerning the termination, the Date of Termination shall be
     the  date  the  dispute  is finally determined,  whether  by
     mutual  agreement  by  the parties or upon  final  judgment,
     order  or  decree of a court of competent jurisdiction  (the
     time  for  appeal  therefrom having expired  and  no  appeal
     having been perfected).

4.   Compensation Under this Agreement.

(a)  If within two years after a Change in Control of the Company
     a  Notice  of Termination is given either by the Company  to
     the  Executive  or by the Executive to the Company,  and  if
     such  termination is not be reason of the Executive's death,
     Disability or Retirement, or by the Company for Cause, or by
     the  Executive other than for Good Reason, the Company shall
     make the following payments to the Executive:

(i)   the  full  base salary to which the Executive  is  entitled
through the Date of Termination;

(ii) credit for unused vacation;

(iii)      an  amount  equal to the Executive's EICP Bonus  Award
     under  the  Company's Executive Incentive Compensation  Plan
     for  the  fiscal year in which the Notice of Termination  is
     given,  multiplied by the percentage determined by  dividing
     the  number of days in the Company's fiscal year  that  have
     elapsed prior to the date on which the Notice of Termination
     is  given  by the total number of days in such fiscal  year.
     As  used  in  this clause (iii) the Executive's Annual  EICP
     Bonus  Award means the dollar amount which would  have  been
     paid to Executive for the fiscal year in which the Notice of
     Termination is given under the Company's Executive Incentive
     Compensation  Plan,  based  on  the  assumption   that   the
     Outstanding  Level of performance would be  reached  by  the
     Company and the Executive.

(iv) an  amount equal to two and one-half (2.5) times the sum  of
     the  Executive's annualized base salary and EICP Bonus Award
     (as defined in clause (iii) above) for the year in which the
     Notice of Termination is given, provided, however, that  the
     amounts  to be paid to the Executive under this clause  (iv)
     shall  be  reduced by the amounts payable to  the  Executive
     under clauses (ii) and (iii) of this Section 4(a).

(b)  If  it  is finally determined under the procedures set forth
     in  Section  4(c)  that  the  amount  of  "excess  parachute
     payments," if any, exceeds the Executive's "base amount" (as
     such  terms  are  defined in Section 280G  of  the  Internal
     Revenue Code of 1986 (the "Code")) by more than 3 times, the
     aggregate amount of the payments required to be made by  the
     Company  under clauses (iv), (iii) and (ii) of Section  4(a)
     that  constitute excess parachute payments shall be reduced,
     in  that  order, to $100 less than the largest  amount  that
     will  result in no portion of such payment being subject  to
     the  excise  tax imposed by Section 4999 of  the  Code  (the
     "Excise Tax").

(c)  The Company shall notify the Executive in writing within  10
     days  after a Notice of Termination is given either  by  the
     Company  or the Executive, of the amount of the payments  to
     be  made by the Company under this Agreement, together  with
     any  other payments made or to be made by the Company to the
     Executive,  that  constitute "parachute payments"  (as  such
     terms  are  defined in Section 280G of the Code) and  excess
     parachute  payments and of the amount of the  reduction,  if
     any,  required  by Section 4(b).  Within 20 days  after  the
     Notice  of Termination is given, the Executive shall  notify
     the  Company in writing whether he agrees with the Company's
     calculation of the amount of parachute payments  and  excess
     parachute  payments, and with the amount of  any  reduction.
     If   the   Executive  does  not  agree  with  the  Company's
     calculations, the Executive shall inform the Company of  the
     amounts that he believes to be the correct amounts.  If  the
     Company and the Executive cannot agree within 30 days  after
     the  Notice  of  Termination is given on the amount  of  the
     parachute payments and excess parachute payments, and on the
     amount  of  any reduction, the calculation of  such  amounts
     (and  any  reduction)  shall be made  by  independent  tax
     counsel  selected  by  the Company's  independent  auditors.
     Such  determination shall be completed within 15 days  after
     it is submitted to such independent tax counsel and shall be
     conclusive and binding on the parties.

(d)  The amounts requires to be paid under Section 4(a), less the
     amount  of  any  reduction determined by the  Company  under
     Section 4(b) and 4(c), shall be paid by the Company  to  the
     Executive  in cash in a lump sum on the 10th day  after  the
     Date  of Termination.  If it is later determined, under  the
     procedure set forth in Section 4(c), that the amount of  any
     reduction  is  less  than that initially determined  by  the
     Company,  the  Company  shall  pay  the  difference  to  the
     Executive in cash within five days after the amount  of  any
     reduction is finally determined.  If it is later determined,
     under  the  procedures set forth in Section 4(c),  that  the
     amount   of  any  reduction  is  more  than  that  initially
     determined  by  the Company, the Executive shall  repay  the
     difference to the Company in cash within five days after the
     amount of any reduction is finally determined.

(e)  Any payments required under this Section 4 shall be paid net
     of applicable federal, state and local tax withholding.

(f)  If the Company is required to make payments to the Executive
     under  Section 4(a), the Company, until the earlier  of  (i)
     one  year after the Date of Termination or (ii) commencement
     of   full-time  employment  by  the  Executive  with  a  new
     employer, shall maintain in full force and effect,  for  the
     continued  benefit  of  the Executive,  medical  and  dental
     programs or arrangements in which the Executive was entitled
     to participate immediately prior to the Date of Termination,
     provided  that  continue participation by the  Executive  is
     possible  under  the  general terms and provisions  of  such
     plans and programs.

(g)  Except  for the payment referred to in clause (i) of Section
     4(a)  none  of  the  payments to the  Executive  under  this
     Section 4 shall be counted for the purpose of computing  the
     Executive's  benefits  under any  pension,  profit  sharing,
     deferred   compensation  or  other  employee  benefit   plan
     maintained by the Company.

5.    No  Obligation  to Mitigate Damages;  No  Effect  on  Other
Contractual Rights.

     The  provisions of this Agreement, and any payment  provided
     for  hereunder,  shall  not  reduce  any  amounts  otherwise
     payable,  or  in  any way diminish the Executive's  existing
     rights,  or rights which would accrue solely as a result  of
     the  passage of time, under any Benefit Plan, Incentive Plan
     or  Securities Plan, employment agreement or other contract,
     plan or arrangement.

6.   Successor to the Company.

(a)  The  Company  will require any successor or assign  (whether
     direct  or  indirect, by purchase, merger, consolidation  or
     otherwise)  to  all  or substantially all  of  the  business
     and/or  assets  of  the Company, by agreement  in  form  and
     substance   satisfactory   to  the   Executive,   expressly,
     absolutely  and  unconditionally  to  assume  and  agree  to
     perform  this Agreement in the same manner and to  the  same
     extent that the Company would be required to perform  it  if
     not  such  succession or assignment had  taken  place.   Any
     failure of the Company to obtain such agreement prior to the
     effectiveness of any such succession or assignment shall  be
     a  material  breach of this Agreement and shall entitle  the
     Executive to terminate the Executive's employment  for  Good
     Reason.  As used in this Agreement, "Company" shall mean the
     Company as herein before defined and any successor or assign
     to  its  business and/or assets as aforesaid which  executes
     and delivers the agreement provided for in this Section 6 or
     which   otherwise  becomes  bound  by  all  the  terms   and
     provisions of this Agreement by operation of law.  If at any
     time  during  the  term of this Agreement the  Executive  is
     employed  by  any  corporation  a  majority  of  the  voting
     securities of which is then owned by the Company,  "Company"
     as  used in Section 3, 4, 11 and 12 hereof shall in addition
     include  such  employer.  In such event, the Company  agrees
     that  it  shall pay or shall cause such employer to pay  any
     amounts owed to the Executive pursuant to Section 4 hereof.

(b)  This  Agreement  shall  inure  to  the  benefit  of  and  be
     enforceable   by   the   Executive's  personal   and   legal
     representatives,   executors,  administrators,   successors,
     heirs,   distributees,  devisees  and  legatees.    If   the
     Executive should die while any amounts are still payable  to
     him  hereunder, all such amounts, unless otherwise  provided
     herein,  shall be paid in accordance with the terms of  this
     Agreement  to  the  Executive's devisee, legatee,  or  other
     designee  or,  if  there  be  no  such  designee,   to   the
     Executive's estate.

7.   Notice.   For  purposes of this Agreement, notices  and  all
     other communications provided for in the Agreement shall  be
     in  writing and shall be deemed to have been duly given when
     delivered or mailed by United States certified or registered
     mail, return receipt requested, postage prepaid, as follows:

If  to  the  Company: Structural  Dynamics  Research Corporation
                      Vice  President, Secretary and  General
                      Counsel
                      2000 Eastman Drive
                      Milford, OH  45150

If to the Executive:  Address of The Executive

    or  such other address as either party may have furnished  to
    the  other  in  writing in accordance herewith,  except  that
    notices  of  change of address shall be effective  only  upon
    receipt.

8.  Miscellaneous.   No  provisions  of  this  Agreement  may  be
    modified,   waived   or   discharged  unless   such   waiver,
    modification or discharge is agreed to in writing  signed  by
    the  Executive  and the Company.  No waiver by  either  party
    hereto  at  anytime of any breach by the other  party  hereto
    of,  or  compliance with, any condition or provision of  this
    Agreement  to  be  performed by such  other  party  shall  be
    deemed  a  waiver  of  similar or  dissimilar  provisions  or
    conditions  at  the same or at any prior or subsequent  time.
    No  agreements or representatives, oral or otherwise, express
    or  implied,  with respect to the subject matter hereof  have
    been  made  by either party which are not set forth expressly
    in  this Agreement.  This Agreement shall be governed by  and
    construed in accordance with the laws of the State of Ohio.

9.  Validity.    The  invalidity  or  unenforceability   of   any
    provisions  of this Agreement shall not affect  the  validity
    or  enforceability of any other provision of this  Agreement,
    which shall remain in full force and effect.

10. Counterparts.  This Agreement may be executed in one or  more
    counterparts,  each  of  which  shall  be  deemed  to  be  an
    original  but all of which together will constitute  one  and
    the same instrument.

11. Legal  Fees  and Expenses.  The Company shall pay  all  legal
    fees  and expenses which the Executive may incur as a  result
    of  the Company's contesting the validity, enforceability  or
    the  Executive's interpretation of, or determinations  under,
    this Agreement.

12. Confidentiality.   The Executive shall retain  in  confidence
    any  and  all confidential information known to the Executive
    concerning  the  Company and its business  so  long  as  such
    information is not otherwise publicly disclosed.

IN  WITNESS WHEREOF, the parties have executed this Agreement  as
of the date first above written.

ATTEST:

                              By:
                    

                              By:
                                   Vice President, Secretary and
                                   General Counsel



Exhibit 10.12

           NON-QUALIFIED UNFUNDED DEFERRED COMPENSATION PLAN
                       FOR OUTSIDE DIRECTORS OF
               STRUCTURAL DYNAMICS RESEARCH CORPORATION

SECTION 1.     PARTICIPATION.

(a)  A  director  of  Structural  Dynamics  Research  Corporation
     ("SDRC")  who  is  not  an  employee  may  elect  to   defer
     compensation  earned for services as a  director  that  such
     director  has  not elected to receive in a form  other  than
     cash  ("Annual  Cash  Retainer").   All  or  a  portion   in
     increments of not less than 25% of the quarterly fees  which
     would  otherwise be payable at the end of each  three  month
     period  ending  on  March  31, June  30,  September  30  and
     December 31 ("Retainer Payment Dates") but for this election
     to  participate in this Plan, may be deferred in  accordance
     with the terms and conditions of this Non-Qualified Deferred
     Compensation  Plan  for  Outside  Directors  of   Structural
     Dynamics Research Corporation ("Plan").

(b)  A  director  who  shall elect to participate  in  this  Plan
     ("Participating  Director") shall make  his  or  her  annual
     election to defer his or her Annual Cash Retainer by  giving
     written  notice to the Secretary of SDRC at least seven  (7)
     business days prior to January 1 of the Plan Year for  which
     the  election  is  made ("Annual Election Notice")  attached
     hereto  as Exhibit A.  The Participating Director shall  not
     be entitled to defer any future Annual Cash Retainer fees in
     addition  to those elected to be deferred for the  remaining
     portion  of  the  current Plan Year  for  which  the  Annual
     Election Notice is delivered.  "Plan Year" is defined  as  a
     twelve-month  period beginning on January 1  and  ending  on
     December 31.

(c)  The   deferred   Annual   Cash   Retainer   fees   (Deferred
     Compensation") shall be paid on such future  date  or  dates
     and  in such manner as a Participating Director shall  elect
     in the initial Annual Election Form; PROVIDED, (i) such form
     of  payment election shall be irrevocable and (ii)  that  no
     Deferred  Compensation shall be paid in  the  same  calendar
     year  in  which  any  portion of the  Annual  Cash  Retainer
     representing the Deferred Compensation is earned.

SECTION 2.     ADMINISTRATION.  This Plan, which was approved  by
the  board of directors of the Company on December 9, 1997, shall
be  administered by a committee comprised of the Chief  Financial
Officer  and  the Secretary respectively, of SDRC  ("Committee").
The  Committee may delegate certain administrative  authority  to
other   employees  of  SDRC,  but  shall  retain   the   ultimate
responsibility for the interpretation of, and amendments to,  the
Plan.   The members of the Committee shall not be liable for  any
of  their  actions  or determinations made  in  good  faith  with
respect to the administration of the Plan.

SECTION   3.       ESTABLISHMENT  AND  MAINTENANCE  OF   DEFERRED
COMPENSATION ACCOUNTS.

(a)       The  Company  shall establish and maintain  a  separate
          Deferred  Compensation  account  ("Account")  for  each
          Participating  Director.   The  Deferred   Compensation
          shall  be  credited to the Account as of the  following
          dates:   march 31, June 30, September 30, and  December
          31,  the  Retainer Payment Dates, following the  Annual
          Election.

(b)       The  Participating  Director shall  elect  one  of  the
          following Account appreciation alternatives:

(i)       STOCK EQUIVALENT ACCOUNT.  Under this alternative,  the
          values  of  the  Stock  Equivalent  Account  shall   be
          determined as if the Deferred Compensation is  invested
          in  SDRC common stock equivalents on the Credit  Dates.
          The  number of SDRC common stock equivalents  shall  be
          determined   by  dividing  the  Deferred   Compensation
          credited  to  the Account on the Credit  Dates  by  the
          lowest quoted selling price of SDRC Common Stock on the
          applicable  day  on the Nasdaq National  Market  System
          Composite    transaction   tape    ("Market    Value").
          Fractional stock equivalents will be computed  to  four
          decimal places.  An amount equal to all dividends  paid
          on  the  shares of SDRC common stock will be  converted
          into   whole  or  fractional  shares  of  common  stock
          equivalents  at  the Market Value as  of  the  dividend
          payment dates and credited to the Account.  The  amount
          of  Deferred Compensation to be paid to a Participating
          Director  form  the  Stock Equivalent  Account  on  the
          payment   date(s)  specified  in  the  Initial   Annual
          Election  Form  shall be equal to  (a)  the  number  of
          shares  equivalents  accumulated in  the  Account;  (b)
          multiplied  by the Market Value on the date upon  which
          the  Deferred Compensation is scheduled to be paid; and
          then (c) divided by the total number of payments to  be
          made  (or  remaining to be paid), as specified  in  the
          Initial Annual Election Form.

(ii)      INTEREST ACCOUNT - Under this alternative, the rate  of
          interest payable on the balance of the Interest Account
          will be a fluctuating rate equal to the prime rate made
          available  by The Fifth Third Bank of Cincinnati,  Ohio
          to  its  preferred customers on each  of  the  Retainer
          Payment  Dates.   Interest  will  be  credited  to  the
          Account quarterly on the Retainer Payment Dates and  on
          the  date  of  the  final payment  on  the  outstanding
          balance  of  the  Account  (which  would  include   all
          principal  and  interest  accrued  to  that  date),  as
          specified  in  the  Initial Annual Election  Form.   If
          installments  payments  are specified  in  the  Initial
          Annual   Election   Form,  the   amount   of   Deferred
          Compensation  to be paid to the Participating  Director
          form  the  Interest  Account  shall  be  determined  by
          dividing  the  current balance of the Interest  Account
          (including  all interest allocated as of  the  Retainer
          Payment  Date) by the number of remaining  installments
          payments.

(c)       The  Participating Director may elect to  apportion  in
          increments  of  not  less  than  25%  of  the  Deferred
          Compensation between a Stock Equivalent Account and  an
          Interest   Account,   but  the   balances   cannot   be
          transferred  between accounts after  the  apportionment
          has been made.

SECTION 4.     PAYMENTS OF DEFERRED COMPENSATION.

(a)       A  Participating Director may elect to receive payments
          of  Deferred Compensation either in a lump sum  payment
          or  in  annual installments as specified in the Initial
          Annual Election Form.

(b)       The  Account  shall continue to be maintained  for  the
          benefit  of  the  Participating Director  and  paid  in
          accordance with the Initial Annual Election Form in the
          event  that the Participating Director's service  as  a
          director   shall  terminate  prior  to   all   of   the
          outstanding balance in the Account being paid out.

(c)       If  a Participating Director shall die prior to all the
          payments  being  made  form  the  Account,  the  unpaid
          balance  of the Account shall be paid on the  30th  day
          after  the Secretary of SDRC has been duly notified  of
          his  or  her death to his or her designated beneficiary
          or  beneficiaries,  as  specified  in  the  Beneficiary
          Designation Form (attached hereto as Exhibit B), or  in
          the absence of such designation, to his or her personal
          representative.  Such death payment shall be made in  a
          single lump sum, irrespective of the time and manner of
          payment specified in the initial Annual Election Form.

SECTION   5.      UNFUNDED  OBLIGATION  OF  SDRC.   The  balances
accumulated  in the Accounts shall constitute general contractual
obligations of SDRC to the Participating Directors.   SDRC  shall
not  segregate assets, create any security interest  or  encumber
its assets in order to provide for or fund the payment (s) of the
balance(s) accumulated in the Accounts.

SECTION 6.     NON-ASSIGNABILITY.  The rights and benefits  of  a
Participating Director under the Plan are personal and cannot  be
pledged,  transferred  or assigned except  by  designation  of  a
beneficiary  (or beneficiaries), will or the laws of descent  and
distribution.

SECTION 7.     AMENDMENTS.  Any substantive amendment to the Plan
shall  be approved by the Committee.  No amendment shall be  made
which  would  adversely  affect the tax status  of  the  Deferred
Compensation  accumulated  in  the  Accounts  or  reduce  amounts
credited to the Accounts.

SECTION  8.      EFFECTIVE  DATE;  TERMINATION.   This  Plan  was
approved  by  the  Board of Directors on December  9,  1997,  and
became  effective on the same date.  The Board  of  Directors  of
SDRC  may  terminate this Plan at any time;  PROVIDED THAT,  such
termination   shall  not  affect  the  rights  of   Participating
Directors  which  have  accrued under this  Plan  prior  to  such
termination.   In the event of termination, the payment  schedule
specified  in the initial Annual Election Form shall continue  to
be followed.
                                                       EXHIBIT A

               STRUCTURAL DYNAMICS RESEARCH CORPORATION
           NON-QUALIFIED UNFUNDED DEFERRED COMPENSATION PLAN
                      FOR NON-EMPLOYEE DIRECTORS

                         Annual Election Form


I hereby irrevocably elect to have       % [fill in 0%; 25%; 50%;
75%  or 100%] of my total compensation as a non-employee director
of  Structural Dynamics Research Corporation payable to me in the
calendar  year immediately following the calendar  year  of  this
election deferred in accordance with the provisions of the Plan.

Of  the amount so deferred, I elect to allocate       % [fill  in
0%;  25%;  50%, 75% or 100%] to my Stock Equivalent  Account  and
% [fill in 0%, 25%; 50%; 75% or 100%] to my Interest Account.

In  accordance  with Section 4 of the Plan, I  hereby  elect  the
following  payment  method for Deferred  Compensation  to  myself
(initial one box):

___ As a lump sum including interest accrued as of the day
preceding  payment, payable on the first  day  of  the
second month  following the later of my 65th birthday or  the
date I cease to be a director of SDRC.

____ In ____ (insert number of installments between
12 and 60) commencing on the first day of the month
following the later of the month of my 65th birthday or
the month I cease to be a direct of SDRC.

I  understand  that I may change or revoke the deferral  election
and  the  allocation between accounts each year,  but  the  above
payment election shall be irrevocable.




Date:

Signature:

Print/Type Name:

                                                       EXHIBIT B

               STRUCTURAL DYNAMICS RESEARCH CORPORATION
           NON-QUALIFIED UNFUNDED DEFERRED COMPENSATION PLAN
                      FOR NON-EMPLOYEE DIRECTORS
                                   
                     Beneficiary Designation Form
                                   






In accordance with Section 4 of the Plan, I hereby designate
as  my  beneficiary.   This designation supersedes  all  previous
designations made by me.




Date:

Signature:

Print/Type Name:

<PAGE>
<PAGE>
<TABLE>
Exhibit 13

SELECTED FINANCIAL DATA
Structural Dynamics Research Corporation

<CAPTION>
                                         Year ended December 31

(in thousands, except per share    1997(3)     1996     1995(4)   1994       1993
data) 
<S>                              <C>         <C>       <C>       <C>       <C>  
Operating data: (1)                                              
  Total revenue                  $351,322    $285,256  $224,138  $185,358  $165,893

  Operating income (loss)        $ 37,059    $ 44,900  $ 28,355  $ (1,239)   (4,104)

  Net income (loss) before
    cumulative effect
    of accounting change         $ 30,030    $ 38,148  $ (2,809) $ (8,295) $ (8,573)

  Net income (loss)              $ 30,030    $ 38,148  $ (2,809) $(12,191) $ (8,573)

Common Share data: (1)
  Basic net income (loss) per
    share                        $    .85    $   1.11  $   (.09) $   (.39) $   (.28)
  Dilutive net income (loss)    
   per share                     $    .81    $   1.05  $   (.09) $   (.39) $   (.28)
  Common and common equivalent  
   shares                          36,947      36,290    32,430    31,352    30,999

Balance sheet data: (1)
  Working capital                $102,329    $ 68,574  $ 42,412  $ 31,322  $ 30,623
  Total assets                   $293,196    $239,372  $207,673  $152,192  $145,278
  Long-term liabilities          $  7,751    $  9,281  $  9,730  $  5,640  $  1,029
  Total shareholders' equity     $177,837    $130,547  $ 85,144  $ 76,414  $ 89,922

Pro forma data: (2)
   Net income (loss)             $ 28,096    $ 36,632  $ (4,394) $(13,307) $ (9,522)
   Basic net income (loss) per
    share                        $    .80    $   1.07  $   (.14) $   (.42) $   (.31)
   Dilutive net income (loss)                                      
     per share                   $    .76    $   1.01  $   (.14) $   (.42) $   (.31)
<FN>
(1)    All  information  has  been  restated  to  reflect  the  1997
  acquisition  of  Computer  Aided Systems  for  Engineering  (CASE),
  accounted  for  as  a pooling-of-interests.  (See  Note  2  to  the
  consolidated financial statements).

(2)     Pro  forma net income and pro forma net income per share  was
  computed using pro forma net income which reflects the tax  expense
  that  would have been reported if CASE (an S corporation for income
  tax  reporting  purposes  prior  to  acquisition)  had  been  a   C
  corporation.

(3)     In  1997,  a  charge  of  $20,850  for  purchased  in-process
  research  and  development  associated  with  the  acquisition   of
  Metaphase  Technologies,  Inc.  was  included  in  the  results  of
  operations.    (See   Note   2   to  the   consolidated   financial
  statements).

(4)     In  1995,  cost  of  $24,300 for  the  class  action  lawsuit
  settlement,  net of estimated insurance proceeds, was  included  in
  the   net   loss.   (See  Note  8  to  the  consolidated  financial
  statements).
</FN>
</TABLE>

<PAGE>

MANAGEMENT'S  DISCUSSION  AND ANALYSIS  OF  FINANCIAL  CONDITION 
AND RESULTS OF OPERATIONS
Structural Dynamics Research Corporation

(in thousands)

Structural  Dynamics  Research Corporation is a leading  supplier 
of software   tools  and  software  related  services  to 
manufacturers worldwide.   The  software  tools are used for  the 
development  and manufacture  of  mechanical products and the 
management  of  product information.   The  Company's primary
software offerings  are  I-DEAS Master  Series(TM) and Metaphase(R)
Enterprise(TM).  I-DEAS Master Series  is an  integrated CAD/CAM/CAE
(computer-aided design, manufacturing  and engineering) system which
improves the speed and reliability  of  the design  and  production
of mechanical products.  Metaphase Enterprise is   product data
management (PDM) software which tracks and  manages enterprise-wide
data and processes associated with the life cycle  of products.

Certain statements in this report are forward-looking statements
that involve  risks  and  uncertainties which could  cause  the 
Company's future  results  to  differ from the expectations 
described  herein. Forward looking statements should be evaluated in
the context of risk factors and uncertainties, some of which are
described in more detail in "Factors That May Affect Future
Results".

Results of Operations

Net  income for 1997 was $30,030 including a non-recurring charge 
of $20,850  for purchased in-process research and development
associated with  the  acquisition of Metaphase Technologies,  Inc. 
(Metaphase). Net  income  excluding this charge increased to $50,880 
compared  to $38,148  for 1996.  Net income for 1995, adjusted to
exclude  a  non-recurring  charge  of  $24,300  from  a  litigation 
settlement,  was $21,491.  (See "Litigation Settlement").

Revenue

Consolidated  revenue, including licenses, maintenance and 
services, increased  to $351,322 for 1997 compared to 1996 revenue
of  $285,256 and  1995 revenue of $224,138.  This represents
increases of  23%  in 1997, 27% in 1996, and 21% in 1995.  Price
increases have not been  a material factor in the Company's revenue
growth.

Software license revenue increased 12% in 1997, 17% in 1996  and 
14% in 1995.  The revenue growth reflects ongoing worldwide
acceptance of the Company's software  products,  including 
continual   product enhancements.   Software  license  revenue 
growth  for   CAD/CAM/CAE products  was  3%  and  18%  for 1997 and 
1996,  respectively.   PDM software  license  revenue,  while  on 
a  much  smaller  base   than CAD/CAM/CAE   software,  grew  82% 
and  10%  in   1997   and   1996, respectively.  License revenue
growth rates for 1997 were  negatively affected  by  the 
strengthening of the  U.S.  dollar  against  major European and
Asian currencies.  The stronger dollar reduced demand by making  
software  products  relatively  more  expensive  to  foreign
customers  who  order  in  U.S. dollars.  The  stronger  dollar 
also resulted  in  a  lower  translation of foreign  currency 
denominated orders into U.S. dollars.  PDM license sales have been
facilitated by a  streamlined  distribution  channel  since  the 
Company  purchased Metaphase in January 1997.

Revenue  from software maintenance contracts and services  grew 
37%, 42%  and 32% in 1997, 1996 and 1995, respectively.  The growth
was  a result   of  progressive  demand  for  upgrade  rights  on 
software, implementation  projects,  customer  support  services 
and  training associated  with a larger base of customer
installations with  I-DEAS Master Series and Metaphase Enterprise
softwares.  The percentage  of the   Company's  total revenue
derived from software maintenance  and services  increased to 51% in
1997 from 46% in 1996 and 41% in  1995. This  trend reflects the
larger size of customer support and  service projects which the
Company has undertaken since 1995.

Total  revenue from international operations accounted for  51%, 
52% and  54%  of  consolidated  total revenue in  1997,  1996  and 
1995, respectively.   In 1997 and 1996, significant increases  in 
domestic revenue from a major automotive customer, the stronger U.S.
dollar in 1997  and  slower  revenue  increases  in  Asia-Pacific 
resulted  in declining international revenue as a percentage of
total revenue.

The  Company  expects that revenues will increase  in  1998  for 
its CAD/CAM/CAE and PDM product lines, and that the international 
market will  continue to account for a significant portion of total
revenue.  The rate of growth will depend, in part, on the Company's
abililty to expand  its sales and support infrastructures and on
foreign exchange rates.

Cost of Revenue

Cost  of revenue consists principally of the staff and related 
costs associated  with  the  generation and support  of  software 
services revenue,  amortization  of capitalized software 
construction  costs, royalty fees paid to third parties under
licensing agreements and the cost  of  distributing  software 
products.   Cost  of  revenue   was $120,444, $80,499 and $58,420
for 1997, 1996 and 1995, respectively.  The  cost  of licenses
represented 15% of license revenue  for 1997, 1996  and 1995.  The
cost of license revenue was not impacted by  the strengthening  of
the U.S. dollar in 1997 against foreign  currencies because the cost
was primarily incurred in U.S. dollars.  The cost of services  and 
maintenance  represented  53%,  44%  and  41%  of  the associated 
revenue for 1997, 1996 and 1995, respectively.   Relative to  the 
associated sales, cost of services and maintenance increased due  to 
the  hiring, training and integration cost  associated  with
expanding  the  workforce  to meet the growing  demand  for 
software implementation,  training and post license sales  support. 
Also  in 1997,  the Company allocated more fixed facility and common 
overhead expenses  to  the  cost  of  services  and  maintenance 
due  to  the significant  growth  of  the  implementation  and 
customer   support workforces.

Selling and Marketing Expenses

Selling  and marketing expenses consist of the costs associated 
with the  worldwide  sales  and marketing staff, advertising  and 
product localization.  These expenses were $105,756, $109,700 and
$97,272  in 1997,  1996  and 1995, respectively.  These amounts
represented  30%, 38%  and  43% of total revenue for 1997, 1996 and
1995, respectively. While  the  Company expanded its sales force 31%
since  December  31, 1996,  the  net  decrease in selling and
marketing  expense  in  1997 resulted  from  certain non-recurring
charges incurred  during  1996. Those   charges   included 
significant  expense  for   a   corporate advertising  campaign, 
bad  debt  expense  and  special   commission programs.  In 1997,
the Company allocated less facility and  overhead costs  to  selling
and marketing expenses, and more to  the  cost  of services  and 
maintenance as discussed under cost of  revenue.   The 1996  selling 
costs  as  a percentage of revenue  decreased  due  to relatively 
fixed  selling and marketing costs  associated  with  the increased 
maintenance and services revenue.  In  1998,  the  Company plans to
expand its sales infrastructures and spend more on marketing and
advertising programs. 

Research and Development Expenses

Research  and  development expenses consist  primarily  of 
salaries, benefits, computer equipment costs and facilities
associated with the product  development staff.  It excludes costs
which are  capitalized in  accordance  with Statement of Financial
Accounting Standards  No. 86.   The  Company continued to invest
significant resources  in  the research  and  development  of
product  advancements.   Research  and development expense increased
to $49,415 in 1997 from $34,018 in 1996 and  $26,507 in 1995,
representing 14%, 12% and 12% of total  revenue for  1997,  1996 and
1995, respectively.  The increases were  due  to additions in the
development staff from the Metaphase acquisition  as well as staff
additions for I-DEAS product development.  During 1997, the  Company
incurred $7,153 of product development costs which  were reimbursed 
by  other  companies.  Research and development  expenses also 
excluded capitalized internal software costs of $12,957, $9,679 and 
$6,928  for 1997, 1996 and 1995, respectively.  The increase  in
capitalized costs reflected the higher level of development staff
and timing  differences for the release of new products among  the 
three years.   Capitalized amounts represented 21%, 24% and  22%  of 
gross research  and  development cost in 1997, 1996 and 1995,
respectively. The  Company  expects research and development costs
to  increase  in 1998.

General and Administrative Expenses

General and administrative expenses consist of costs associated 
with the  corporate,  finance, human resource and  administrative 
staffs. General and administrative expenses amounted to $17,798,
$16,139  and $13,584  in  1997, 1996 and 1995, respectively.  The 
increases  were primarily  a  result  of  a larger workforce needed 
to  support  the Company's  growth.  These amounts represent 5%, 6%
and  6%  of  total consolidated  revenue  for 1997, 1996 and  1995, 
respectively.   The Company expects general and administrative
expenses to remain  stable as a percent of revenue in 1998.

Acquisition of Metaphase Technology, Inc.

The Company and Control Data Systems, Inc. (CDSI) formed Metaphase
as a joint venture in 1992.    In January 1997, the Company acquired
the remaining stock of Metaphase and certain assets of CDSI's global 
PDM software   sales  and  support  business.   The  purchase  price 
of approximately  $33,000  included  cash  and  a  stock  warrant. 
The acquisition was accounted for as a purchase.  The Company
recorded  a one-time  charge  of  $20,850 to write off  in-process 
research  and development  acquired  in  the  acquisition  that  did 
not  have  an alternative future use and had not reached
technological feasibility. 

Acquisition of Computer Aided Systems for Engineering

In  December 1997, the Company acquired all of the outstanding 
stock of  two  privately held companies doing business together as
Computer Aided  Systems  for Engineering (CASE) by issuing one 
million,  five hundred  thousand  shares of common stock having an
aggregate  market value of approximately $25,000.  The acquisition
was accounted for as a  pooling-of-interests, and accordingly, all
prior periods have been restated to include the results of CASE. 
CASE had been a third party developer of drafting software for the
Company since 1984.

Acquisition of Camax Manufacturing Technologies, Inc.

In  June  1996,  the  Company  finalized  the  acquisition  of 
Camax Manufacturing  Technologies, Inc. (Camax)  and  issued  nine 
hundred sixty-seven thousand shares of common stock having a market
value  of $30,000 in exchange for 100 percent ownership of Camax
common  stock. The  acquisition  was  accounted for as a 
pooling-of-interests  and, accordingly,  all  prior  periods  were 
restated  to  reflect  Camax results.   Camax provides
computer-aided manufacturing software for
computerized-numerical-control machining operations with products
and services  designed to simplify, automate and optimize  the 
machining process to streamline production and accelerate
time-to-market.

Equity in Losses of Affiliates

Equity  in losses of affiliates for 1996 primarily represented
SDRC's share  of  the  Metaphase joint venture losses.   Until  the 
Company acquired Metaphase in January 1997, the Company paid royalty
fees  to Metaphase based upon the amount of PDM sales.

During  1994, the Company formed a joint venture with Siemens
Nixdorf Informationssysteme AG (SNI), SDRC Software and Services,
GmbH  (SDRC GmbH)  to  market the Company's software products in
Central  Europe. For  1995,  the  majority  of  the  Company's 
equity  in  losses  of affiliates  represented its share of SDRC
GmbH joint venture  losses. In  1995, the Company purchased the
remaining shares in SDRC GmbH  at its  net  book  value.   As  of
the acquisition  date,  100%  of  the operating  results  of SDRC
GmbH were included  in  the  consolidated financial statements.

Litigation Settlement

In  December 1995, the Company and plaintiffs' counsel,  in  a 
class action  lawsuit,  entered into a Memorandum of Understanding 
setting forth  the terms of a proposed settlement.  Pursuant to the 
proposed settlement,  the  Company agreed to contribute $17,600  of 
cash  and $10,000  in  the form of shares of the Company's common 
stock  to  a settlement  fund.  The amount of the settlement and
other  litigation cost,  net  of  estimated insurance proceeds, 
were  recorded  as  an expense  in 1995.  The insurance proceeds of
$5,000 were received  in 1996.   In  1996,  $17,600 was transferred
to a  settlement  fund  in accordance  with  the  Memorandum  of 
Understanding,  and  a   final settlement between the Company and
the plaintiffs was accepted by the Court.   During  1997,  the
Company issued  common  stock  valued  at $10,000 to finalize its
distributions to the settlement fund.

Other Income, Net

Other  income,  net,  consists principally  of  interest  income 
and foreign currency losses. Interest income increased sequentially 
over the  past  three years primarily due to higher levels  of 
investment balances.   Other income for 1996 was offset by a $950
settlement  of the shareholders' derivative litigation.  In 1995,
other income, net, was  offset  by a net loss of $1,878 resulting
from the sale  of  the United Kingdom test and analysis division.

Income Taxes

The  Company  recorded tax expense of $11,509, $8,636 and  $7,179 
in 1997,  1996  and  1995,  respectively.  In each of these  years, 
the Company's  provision for income taxes consisted primarily  of 
income taxes   currently  payable  to  foreign  jurisdictions  and 
 foreign withholding  taxes  incurred  on  the  Company's  software 
licensing revenue.   These  withholding  taxes  can  be  credited 
against  the Company's U.S. income tax liability.  The Company is
not currently in a  position to utilize all of these foreign tax
credits (FTCs) on its U.S.  return.  The FTCs and other tax
carryforwards are available  to offset  future  U.S.  income  tax 
liabilities,  subject  to  various restrictions.  No benefit was
currently recognized for a  substantial portion  of the Company's
U.S. deferred tax assets since it  is  more likely  than  not  that 
they will not be  realized  based  upon  the Company's current and
anticipated mix of domestic and foreign pre-tax accounting  income, 
tax  credits and deductions  from  non-qualified stock  option 
exercises.  As of December 31, 1997,  $18,732  of  the valuation
allowance of $31,538 is attributable to the tax benefits of stock 
option exercises and such benefits will be credited to capital in
excess of stated value if realized.

Pro  forma  income tax expense reflects the income tax  expense 
that would  have  been reported if CASE (an S corporation for 
income  tax reporting purposes prior to the acquisition) had been a
C corporation for the years ended December 31, 1997, 1996 and 1995.

Liquidity and Capital Resources

As  of  December  31, 1997, the Company had $109,011  in  cash, 
cash equivalents  and liquid investments.   The Company's working 
capital was $102,329 and the Company had no material borrowings. 
The Company also has an unsecured bank line of credit of $15,000.

Cash  flows generated from operations increased to $62,981 for 
1997, compared to $36,593 and $39,913 for 1996 and 1995,
respectively.  For 1996,  operating  cash flows, excluding the
$17,600  payout  for  the class  action  litigation settlement, were
$54,193.  Cash  flows  for 1997  increased  over  1996  primarily 
due  to  higher  net  income, excluding  the  write  off  of 
purchased  in-process  research   and development, partially offset
by increases in accounts receivable.

Liquidity and Capital Resources - (continued)

The  Company used $55,261 of cash for investing activities  in 
1997, including   $29,689   for   the  Metaphase  acquisition.   
Investing activities  totalled  $34,278  and  $8,822  during  1996 
and   1995, respectively. The Company added capital equipment of
$13,640, $14,290 and  $5,827,  respectively  in  1997, 1996  and 
1995  primarily  for furniture  and  computer  equipment to
accommodate  the  increase  in employee   headcount.   The  increase 
in  cash  used  for  investing activities  between 1995 to 1996 was
also due to  the  conversion  of more marketable securities into
cash during 1995.

Net  cash  provided  by financing activities was $5,275,  $4,519 
and $9,434   during   1997,   1996  and  1995,  respectively,  
primarily representing  proceeds  from  the Company's  stock  option 
programs. Financing activities included cash distributions to CASE
shareholders prior to the Company's acquisition of CASE in December,
1997.

The  Company's  sources  of liquidity and  funds  anticipated  to 
be generated  from  operations  are expected  to  be  adequate  for 
the Company's  cash requirements in the foreseeable future.  The 
Company has never paid a cash dividend and intends to continue its
policy  of retaining  earnings  to finance future growth.  The 
Company  has  no other  current  commitments for material capital 
expenditures.   See Note  8  to  the  consolidated financial 
statements  for  additional commitments and contingencies.  The
Company does not expect inflation to have a material impact on its
future operations.

Recent Accounting Pronouncements

In   August   1997,  the  American  Institute  of  Certified  
Public Accountants  issued  Statement  of Position  97-2  "Software 
Revenue Recognition,"  (SOP), which is effective for fiscal  years 
beginning after  December 15, 1997.  The Company's adoption of the
new  SOP  in 1998  is  not  expected to have a material impact  on 
its  financial position or results of operations.

In  June 1997, the Financial Accounting Standards Board (FASB)
issued Statement   of  Financial  Accounting  Standards  (SFAS)  
No.   130, "Reporting  Comprehensive  Income," which establishes 
standards  for reporting  and  display of comprehensive income  and 
its  components (revenue,  expenses,  gains and losses) in a  full 
set  of  general-purpose  financial  statements.  SFAS No. 130 is 
effective  for  the Company's  fiscal  year beginning January 1,
1998.   The  Company  is currently  evaluating the effects of this
change on its  consolidated financial statements.

In  June  1997,  the  FASB  issued SFAS No.  131,  "Disclosure 
about Segments of an Enterprise and Related Information," which
changes the way  public  companies report information about 
operating  segments. SFAS  No.  131, which is based on the
management approach to  segment reporting,  establishes 
requirements  to  report  selected   segment information  quarterly 
and to report entity-wide  disclosures  about products and services,
major customers and the material countries  in which  the  Company 
operates.  SFAS No. 131  is  effective  for  the Company's  fiscal 
year beginning January 1, 1998.   The  Company  is currently 
evaluating the effects of this change on its reporting  of financial
information.


Factors That May Affect Future Results

Forward-looking statements and the Company's results are  subject 
to certain  risks and uncertainties, including but not limited to 
those discussed below, that could cause future results to differ
from those projected.    Risks   and   uncertainties   posed   by  
competitive, technological  or  financial  factors could  have  an 
immediate  and significant  adverse  effect on the trading price  of 
the  Company's stock in any given period.

Product Distribution

Future  results  could be impacted by a slower  growth  rate  in 
the market  than  anticipated.  Besides its own sales force, the 
Company relies on distributors, representatives and value-added
resellers  to market  a significant portion of its products.  The
loss of  a  major customer or a reduction in orders from a major
customer, distributor, representative  or  value-added reseller,
could  have  a  significant impact  to  the  results  of operations
in  any  particular  quarter. Historically,  a  significant portion
of  the  Company's  revenue  is generated  from  shipments  in  the
last  month  of  a  quarter.   In addition,  higher  volumes of
orders have  been  experienced  in  the fourth quarter.  The
concentration of orders makes projections of 

Factors That May Affect Future Results - (continued)

Product Distribution - Continued

quarterly  financial  results difficult.  If  customers  delay 
their orders   or  a  disruption  in  the  Company's  distribution 
occurs, quarterly  results  of operations in any particular  quarter 
may  be negatively  impacted.  The Company usually  ships  software 
licenses within   one  to  two  weeks  after  receipt  of  a 
customer  order. Typically, orders exist at the end of a quarter
which have  not  been shipped;  however,  the value of such orders 
is  not  indicative  of revenue results for any future period.

Competition

The software industry is highly competitive.  The entire industry
may experience  pricing and margin pressure which could adversely 
affect the   Company's  operating  results  and  financial 
position.    The Company's success is dependent on its ability to
continue to develop, enhance  and market new products to meet its
customers' sophisticated needs  within competitive pricing
structures and in a timely  manner. As  product  development  cycles 
become  shorter,  product  quality, performance,  reliability,  ease
of use, functionality,  breadth  and integration may be impacted. 
Therefore, customer preference for  the Company's new products
cannot be assured.  The Company's success also depends  in  part on
its ability to attract and retain technical  and other  key 
employees  who  are  in  great  demand,  to  protect  the
intellectual  property rights of its products  and  to  continue 
key relationships with product development partners.

International Business

A   significant   portion  of  the  Company's   revenues   are  
from international markets.  As a result, the Company's financial 
results could  be impacted by weakened general economic conditions,
differing technological  advances  or  preferences, volatile 
foreign  exchange rates  and government trade restrictions in any
country in which  the Company does business.  The Company has
invested sizable resources in the  Asia  Pacific  region,
particularly in Japan  and  South  Korea. Economic  instability in
this region could lead to an adverse  impact on the Company's
operation results and financial position.

Expense Management

The  Company continues to increase its expense levels to support 
its revenue  growth and to invest in product development.  The 
Company's expense   levels   are  based,  in  part,  on  its  
future   revenue expectations.  If future revenues are less than
expected, net  income may  be  disproportionately affected because 
the  Company's  expense levels  are  generally committed in advance
and  a  relatively  small portion  of  the  Company's expenses vary
with revenue.   During  the third  quarter  of 1997, the Company
initiated steps  to  expand  its sales infrastructure and to invest
more in marketing efforts with the objective of increasing the
distribution of license products.  Future results could be impacted
by lags in sales productivity as additional salespeople are hired or
by the cost of new marketing programs.

Technology

The Company is in the process of upgrading its world-wide
information management  system.  Such a major undertaking could
cause significant disruption as a result of unexpected delays in the
implementation  of this  project.   There  are no assurances that
the  project  will  be completed  within  the projected time frame
and budget.  The  Company does not anticipate any significant
problems associated with the year 2000 consequences for its internal
software or the software which  it markets.   The software which
will be the basis of the Company's  new information management
system is year 2000 compliant.  The  Company's primary software
offerings are also year 2000 compliant.

Stock Market Volatility

The  trading  price of the Company's stock, like other  software 
and technology  stocks,  is  subject  to  significant  volatility. 
  The historical  results  of  operations and  financial  position 
of  the Company   are   not   necessarily  indicative  of  future  
financial performance.   If  revenues  or  earnings  fail  to  meet 
securities analysts'  expectations, there could be an immediate and 
significant adverse  impact  on  the trading price of the  Company's
stock.   In addition, the Company's stock price may be affected by
broader market factors that may be unrelated to the Company's
performance.


                        Report of Management



Responsibility  for the integrity and objectivity  of  the 
financial information  presented  in this Annual Report rests  with 
Structural Dynamics   Research   Corporation's  management.   The  
accompanying financial  statements have been prepared in conformity
with generally accepted  accounting  principles,  applying  certain 
estimates   and judgments  as required. Financial information
contained elsewhere  in this   Annual  Report  is  consistent  with 
that  in  the  financial statements.

The  management  of the Company is responsible for  establishing 
and maintaining a system of internal accounting control that is 
designed to  provide  reasonable  assurance that assets  are 
safeguarded  and transactions  are  properly recorded.  This system 
is  supported  by written  policies  and  procedures, 
organizational  structures  that provide  an appropriate division of
responsibility, internal reviews, and the careful selection and
training of qualified personnel. 

Our   independent  accountants,  Price  Waterhouse  LLP,  audit  
the financial  statements in accordance with generally accepted 
auditing standards, which includes the consideration of the system
of internal control  to  the extent they deem necessary to express
an opinion  on the financial statements.

The  Board  of  Directors, through its Audit  Committee  composed 
of outside  directors,  meets regularly with the  Company's 
independent accountants  and  management  to  review  the  adequacy 
of  internal accounting  controls, financial reporting and the
extent and  results of the audit effort.




/s/William J. Weyand
William J. Weyand
Chairman of the Board,
President and Chief Executive Officer




/s/Jeffrey J. Vorholt
Jeffrey J. Vorholt
Vice President,
Chief Financial Officer and Treasurer



                  Report of Independent Accountants




To the Board of Directors
and Shareholders of
Structural Dynamics Research Corporation



In  our opinion, the accompanying consolidated balance sheet and 
the related consolidated statements of operations, of cash flows 
and  of shareholders'  equity present fairly, in all material 
respects,  the financial  position of Structural Dynamics Research 
Corporation  and its  subsidiaries at December 31, 1997 and 1996,
and the  results  of their operations and their cash flows for each
of the three years  in the  period  ended  December 31, 1997, in
conformity  with  generally accepted  accounting principles. These
financial statements  are  the responsibility of the Company's
management; our responsibility is  to express an opinion on these
financial statements based on our audits. We  conducted  our  audits 
of these statements  in  accordance  with generally accepted
auditing standards which require that we plan  and perform  the 
audit to obtain reasonable assurance about whether  the financial 
statements  are free of material misstatement.   An  audit includes
examining, on a test basis, evidence supporting the  amounts and
disclosures in the financial statements, assessing the accounting
principles  used  and significant estimates made by  management, 
and evaluating the overall financial statement presentation.  We 
believe that  our audits provide a reasonable basis for the opinion
expressed above.






/s/Price Waterhouse LLP
Price Waterhouse LLP
Cincinnati, Ohio
January 23, 1998


<PAGE>
<TABLE>


CONSOLIDATED STATEMENT OF OPERATIONS
Structural Dynamics Research Corporation

<CAPTION>
                                            Year ended December 31
(in thousands, except per share data)    1997         1996       1995
<S>                                    <C>          <C>         <C>
Revenue:                                                        
 Software licenses                     $170,727     $153,058    $131,211
 Software maintenance and services      180,595      132,198      92,927
                                       ---------     -------     -------
   Total revenue                        351,322      285,256     224,138
                                       ---------     --------    -------
Cost of revenue:
 Software licenses                       25,518       22,578      20,250
 Software maintenance and services       94,926       57,921      38,170
                                       --------       -------     -------
   Total cost of revenue                120,444       80,499      58,420
                                       --------       -------     -------
   Gross profit                         230,878      204,757     165,718

Operating expenses:
   Selling and marketing                105,756      109,700      97,272
    Research and development             49,415       34,018      26,507
    General and administrative           17,798       16,139      13,584
 Purchased in-process research and    
   development                           20,850           --          --
                                        -------      -------     --------
   Total operating expenses             193,819      159,857     137,363
                                        -------      -------     --------
   Operating income                      37,059       44,900      28,355

Equity in losses of affiliates              (39)        (230)       (951)
Acquisition costs                            --       (1,102)         --
Litigation settlement                        --           --     (24,300)
Other income, net                         4,519        3,216       1,266
                                        -------       ------     -------
        Income before income taxes       41,539       46,784       4,370

Income tax expense                       11,509        8,636       7,179

                                        --------     ------       -------
   Net income (loss)                   $ 30,030     $ 38,148    $ (2,809)

Basic net income (loss) per share      $    .85     $   1.11    $   (.09)
Dilutive net income (loss) per share   $    .81     $   1.05    $   (.09)
                                        -------       ------      -------
Pro forma net income (loss) and per                             
share data:
  Income before income taxes as       
    reported                             41,539       46,784       4,370
  Pro forma income tax expense           13,443       10,152       8,764
                                        -------      -------      ------
  Pro forma net income (loss)          $ 28,096     $ 36,632    $ (4,394)
                                                               
  Pro forma basic net income (loss)   
    per share                          $    .80     $   1.07    $   (.14)
  Pro forma dilutive net income       
  (loss) per share                     $    .76     $   1.01    $   (.14)
                                        =======      =======      =======
Weighted average common shares
 outstanding                             36,947       36,290      32,430
                                        =======      =======      =======
</TABLE>
See accompanying notes to consolidated financial statements.

<TABLE>

CONSOLIDATED BALANCE SHEET
Structural Dynamics Research Corporation

<CAPTION>
                                            December 31
(in thousands, except per share data)   1997          1996
<S>                                  <C>           <C>
Assets                                 
Current assets:                                      
 Cash and cash equivalents           $ 81,056      $ 72,026
 Marketable securities                 13,030        18,502
 Trade accounts receivable, net of                   
   allowances of $3,529 and $3,281     88,954        61,743
 Other accounts receivable             17,815         7,929
 Prepaid expenses and other current   
  assets                                9,082         7,918

                                      -------       -------
   Total current assets               209,937       168,118
                                      =======       =======
Marketable securities                  14,925        10,509
Net property and equipment             24,627        21,025
Computer software construction        
  costs, net                           31,610        28,614
Other assets                           12,097        11,106
                                      -------       -------
   Total assets                      $293,196      $239,372
                                      =======      =========
Liabilities and Shareholders' Equity                 
Current liabilities:                                 
 Accounts payable                    $ 12,230      $  9,695
 Accrued expenses                      17,327        14,084
 Accrued compensation                  22,263        21,119
 Accrued litigation settlement and    
   related costs                           --        10,104
 Accrued income taxes                   9,182         8,082
 Deferred revenue                      46,606        36,460
                                      -------       -------
   Total current liabilities          107,608        99,544
                                      =======       =======
Other long-term liabilities             7,751         9,281
Commitments and contingencies (Note 8)
Shareholders' equity: 
 Common stock, stated value $.0069
  per share
 Authorized 100,000 shares;
  outstanding shares - 35,654 and    
 34,260 net of 1,500 and 1,542
 shares in treasury                       248           238
 Capital in excess of stated value    114,132        87,302
 Retained earnings                     67,135        42,738
 Foreign currency translation   
   adjustment                          (3,667)          298
 Unrealized holding loss on  
   investments                            (11)          (29)
                                      -------       --------
   Total shareholders' equity         177,837       130,547
                                      =======       =======
   Total liabilities and            
    shareholders' equity             $293,196      $239,372
                                      =======       =======
</TABLE>

See accompanying notes to consolidated financial statements.

<TABLE>
CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY
Structural Dynamics Research Corporation
<CAPTION>
in thousands, except per share data
                                                                              Unrealized
                          Common Stock                           Foreign      holding       Total
                          Outstanding    Capital in              currency     gain (loss)   share-
                                 Stated  excess of     Retained  translation  on            holders'
(in thousands, except    Shares  value   stated value  earnings  adjustment   investments   equity
per share data)          ------- ------  ------------  --------  ----------   -----------   ------
<S>                     <C>      <C>     <C>           <C>       <C>          <C>           <C>
December 31, 1994,                                                 
  As previously  
   reported             29,864   $208    $ 60,638      $15,292   $ (590)      $(669)        $ 74,879
  Pooling-of-interests 
   (Note 2)              1,500     10          10        1,515       --          --            1,535
                        ------   ----    --------       ------    ------       -----         -------
December 31, 1994, as
 restated               31,364    218      60,648       16,807     (590)       (669)          76,414
                                                                   
 Transactions involving                                            
   employee stock plans  1,720     12      12,874                                             12,886
                                                                   
 Distributions of CASE                                          
   S corporation                                        (2,425)                               (2,425)
 Net loss                                               (2,809)                               (2,809)
 Foreign currency                                                  
   translation adjustment                                           590                          590
 Unrealized holding gain
   on marketable
     securities                                                                 488              488
                        ------   -----     -------      -------    ------     -------         ------
December 31, 1995, as 
 restated               33,084    230      73,522       11,573       --        (181)          85,144
 Transactions involving                                            
   employee stock plans  1,176      8      15,016                                             15,024

 Payment for Camax
 dissenter's rights                        (1,236)                                            (1,236)
 Distributions of CASE                                          
  S corporation                                         (6,983)                               (6,983)
 Net income                                             38,148                                38,148
 Foreign currency                                                  
   translation adjustment                                           298                          298
 Unrealized holding gain                                           
   on marketable                                                    
   securities                                                               152                  152
                         -----   -----    --------     -------    -------  -----              _______
December 31, 1996, as  
  restated              34,260    238      87,302       42,738      298     (29)             130,547 
 Transactions involving                                            
   employee stock plans  1,025      7      13,333                                             13,340
 Stock warrant 
  (See Note 2)                              3,500                                              3,500
 Distribution for                                              
  lawsuit  
  settlement               369      3       9,997                                             10,000
 Distributions of CASE                                          
   S corporation                                        (5,633)                               (5,633)
 Net income                                             30,030                                30,030
 Foreign currency                                                  
   translation adjustment                                         (3,965)                     (3,965)
 Unrealized holding gain                                           
   on marketable
    securities                                                               18                   18
                        ------   -----    -------     --------   -------   ----             --------
December 31, 1997       35,654   $248    $114,132      $67,135   $(3,667)  $(11)            $177,837
                        ======   =====   ========     ========   ======== ======            ========
</TABLE>
See accompanying notes to consolidated financial statements.











<TABLE>

CONSOLIDATED STATEMENT OF CASH FLOWS
Structural Dynamics Research          
Corporation
(in thousands)
<CAPTION>
                                                  Year ended December 31
                                           1997      1996          1995
<S>                                      <C>       <C>           <C>
Cash flows from operating activities:                         
 Net income (loss)                       $ 30,030  $ 38,148      $ (2,809)
 Adjustments to reconcile net income 
  (loss) to net cash provided by
  operating activities:
   Purchased in-process research 
    and development                        20,850        --            --
   Depreciation and amortization           11,032     8,136         7,729
   Amortization of computer software    
     construction costs                    15,810    11,779         8,475
   Deferred taxes                            (740)   (2,125)          563
   Litigation settlement                       --        --        24,300
   Loss on sale of UK test and analysis 
     division                                  --        --         1,878
   Stock contributions to 401(k)    
     plan                                   2,249     1,606         1,990
   Other                                      205       213           669
 Changes in assets and liabilities, net                       
   of acquisitions:
    Increase in accounts receivable, net  (31,439)   (1,369)      (10,827)
    (Increase) decrease in prepaid     
      expenses                             (1,032)   (1,635)          696
    (Increase) decrease in other       
      assets                                4,379    (7,261)          564
    (Decrease) increase  in accounts                         
      payable and accrued expenses          2,049   (16,624)       (4,248)
     Increase in accrued income taxes       1,100     1,686         2,134
     Increase in deferred revenue           9,835     1,683        10,623
     Increase (decrease) in other long- 
       term liabilities                    (1,347)    2,356        (1,824)
                                           -------  -------       --------
      Net cash provided by operating    
       activities                          62,981    36,593        39,913
                                           ------    ------       --------
Cash flows from investing activities:                         
 Purchases of marketable  securities      (20,079)  (25,612)      (32,781)
 Proceeds from sales of marketable      
  securities                               21,153    16,949        38,492
 Additions to property and equipment,   
   net                                    (13,640)  (14,290)       (5,827)
 Additions to computer software         
  construction costs                      (13,006)   (9,825)       (8,189)
 Proceeds from sale of UK test and      
  analysis division                            --        --           524
 Acquisition of remaining shares of                           
    SDRC GmbH, 
    net of cash received                       --        --         1,152
    Acquisition of Metaphase            
      Technology, Inc.                    (29,689)
 Investment in and advances to joint              
   ventures                                          (1,500)       (2,193)
                                          --------   -------      --------
    Net cash used in investing        
      activities                          (55,261)  (34,278)       (8,822)
                                          --------   -------      --------
Cash flows from financing activities:                         
 Issuance of common stock                  11,091    13,418        10,896
    Distributions of CASE S corporation    (5,633)   (6,983)       (2,425)
 Payment for Camax dissenter's rights          --    (1,236)           --
 Issuance of long-term debt                    --        --         1,738
 Repayment of long-term debt                 (183)     (680)         (775)
                                           ------     -----        -------
    Net cash provided by financing    
       activities                           5,275     4,519         9,434
                                           ------    ------        --------
Effect of exchange rate changes on cash    (3,965)      298            --
                                           ------    ------        --------
Increase in cash and cash equivalents       9,030     7,132        40,525
Cash and cash equivalents:                                    
 Beginning of period                       72,026    64,894        24,369
                                          -------   --------      --------
 End of period                           $ 81,056  $ 72,026      $ 64,894
                                          -------    -------     ---------
Cash paid during the year for income    
  taxes                                  $ 11,960  $ 10,462      $  5,941
                                           -------    -------     --------
</TABLE>
See accompanying notes to consolidated financial statements.<PAGE>
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Structural Dynamics Research Corporation
(in thousands, except per share data)

(1)  Summary of Significant Accounting Policies

Business

Structural Dynamics Research Corporation (the "Company" or "SDRC")
is a  leading  international  supplier of  CAD/CAM/CAE  (computer 
aided design,  manufacturing and engineering) software used for 
mechanical design automation, product data management (PDM) software
and related services.

Basis of Consolidation

The  consolidated financial statements include the  accounts  of 
the Company and its wholly owned subsidiaries.  Investments in which 
the Company has significant influence, but not control, are
accounted for under  the equity method.  All significant
intercompany balances  and transactions have been eliminated.

Use of Estimates

The  financial  statements,  which are prepared  in  conformity 
with generally accepted accounting principles, require management to 
make estimates  and  assumptions that affect the reported amounts 
in  the consolidated  financial  statements and accompanying  notes. 
 Actual results  could  differ  from those estimates.  Significant 
estimates based  on  the facts and circumstances existing at the 
date  of  the financial  statements include the estimated useful
lives of  computer software construction costs and the likelihood of
realization of  the deferred tax assets.

Pro Forma Net Income and Pro Forma Net Income Per Share

Pro  forma net income and pro forma net income per share reflect 
the tax  expense that would have been reported if Computer Aided 
Systems for  Engineering (an S corporation for income tax reporting 
purposes prior to its 1997 acquisition-See Note 2) had been a C
corporation.

Revenue Recognition

The use of software programs is licensed through the Company's
direct sales  force  and by specific arrangements with certain
distributors, value-added  resellers and other marketing
representatives.   Revenue generated  from  licenses is recognized
when the  following  criteria have  been met: (a) a written order
for the unconditional license  of software  and  a software license
agreement have been received,   (b) the  Company  has shipped the
products to the customer and  performed substantially  all  services
for which  it  was  committed,  (c)  the customer is obligated to
pay and (d) collectibility is probable.

Revenue  from  maintenance contracts is recognized ratably  over 
the term  of  the  agreement  and  the deferred  portion  represents 
the substantial   component   of   deferred   revenue.    Revenue  
 from implementation services, training and other services is
recognized as the service is performed.

In   August   1997,  the  American  Institute  of  Certified  
Public Accountants  issued  Statement  of Position  97-2  "Software 
Revenue Recognition,"  (SOP), which is effective for fiscal  years 
beginning after  December 15, 1997.  The Company's adoption of the
new  SOP  in 1998  is  not  expected to have a material impact  on 
its  financial position or results of operations.

(1)  Summary of Significant Accounting Policies - (continued)

Cost of Revenue

The  cost  of licenses primarily consists of the cost of
distributing the   software  products,  an  allocation  of  the 
amortization   of capitalized software construction costs and an
allocation of  royalty fees  paid  to  third parties under licensing
agreements.    Cost  of maintenance and services primarily consists
of the staff and  related costs  associated with the generation and
support of software service revenue,  an  allocation of the
amortization of capitalized  software construction  costs and an
allocation of royalty fees paid  to  third parties under licensing
agreements.  The allocations between cost  of license revenues and
maintenance and services revenues are based upon the  percentage of
the related revenue to total revenue.   Management believes that the
methodology for allocating the costs is reasonable.

Cash Equivalents and Marketable Securities

Cash  equivalents  include  highly  liquid  investments  in 
interest bearing  accounts and commercial paper with an original 
maturity  of less  than 90 days.   Marketable securities consist of
U.S.  Treasury and   U.S.  Government  agency  obligations.  
Short-term  marketable securities  have a maturity term in excess of
90 days but  less  than one  year.  Long-term marketable securities
have a maturity  term  in excess  of  one  year.    The Company also
has an  unused,  unsecured $15,000 bank line of credit.

Cash  equivalents and marketable securities classified as 
available-for-sale  are  recorded at market value, and any  related 
unrealized gains   and   losses  are  included  in  a  separate  
component   of shareholders' equity.  Marketable securities
classified  as  held-to-maturity  are  recorded at amortized cost,
which approximates  market values.   Realized  and  unrealized gains
and losses  are  determined based on the specific identification
method.

Financial Instruments

The  carrying  amounts  of  cash  and  cash  equivalents, 
marketable securities,  accounts receivable, accounts payable,
accrued  expenses and forward foreign exchange contracts approximate
fair value due  to the short-term nature of these financial
instruments.

Concentrations of Credit Risk

Cash  equivalents,  marketable  securities  and  accounts 
receivable represent  a  potential  credit risk to  the  Company.  
The  Company invests   its  excess  cash  with  government  and 
major   financial institutions  having  strong credit ratings.   
Company  policy  sets credit  ratings  and  maturity terms that
limit the  risk  of  credit exposure and maintain necessary
liquidity. 
The  Company's revenue is generated from a significant customer 
base in   diversified   industries  across  different  geographic  
areas. Revenue  from  a  customer represented 14% and  11%  of 
consolidated revenue  in 1997 and 1996, respectively and a
distributor represented 11%,  12%  and  13% of consolidated revenue
in 1997, 1996  and  1995, respectively.  The Company performs
ongoing credit evaluations of its customers and has not experienced
any material losses related  to  an individual   customer  or 
groups  of  customers  in  any  particular geographic  area.   
Management  believes  allowances  for  potential credit losses are
adequate.

Foreign Currency Translation

Financial statements of foreign subsidiaries whose local currency 
is the  functional currency are translated to U.S. dollars at
period-end exchange  rates  for assets and liabilities and at 
weighted  average exchange   rates  for  the  results  of 
operations.   The  resulting translation      gains      and     
losses      are      accumulated 

(1)  Summary of Significant Accounting Policies - (continued)
Foreign Currency Translation - Continued

in  a  separate component of shareholders' equity.  For major
foreign subsidiaries,  the  functional  currency  changed  in  1996 
to   the subsidiaries' local currency from the U.S. dollar based
upon  changes in  the Company's operating and economic environment. 
 The Company's European   subsidiaries  became  more  autonomous 
due  to   improved profitability and have generated sufficient cash
flows to meet  their operating  and capital needs.  Utilization of
European resources  has been  expanded  due to the local customer
demand for  implementation, support and customization of the
Company's software products and  the establishment  of a European
product development  staff.    Prior  to 1996, for foreign
subsidiaries where the functional currency was  the U.S.  dollar,
the foreign currency gains and losses were included  in determining
the results of operations.

Foreign Exchange Contracts

The   Company   enters   into  forward  foreign  exchange  
contracts denominated  in foreign currencies to hedge certain
foreign  currency denominated  receivables.    Any foreign exchange 
gains  and  losses associated with these financial instruments are
recorded currently in income  to offset any gains and losses arising
from foreign  currency transactions.  The resulting gains and losses
were not material.  The interest  element of the foreign currency
instruments  is  recognized over  the life of the contract.  As of
December 31, 1997, the Company had  approximately $12,251 of foreign
exchange contracts outstanding. All  contracts  mature within one
year.  Should the  counterparty  to these  contracts fail to meet
its obligations, the Company  would  be exposed  to  foreign
currency fluctuations, along with the  cost,  if any, to extinguish
the contracts.

Property and Equipment

Depreciation  for property and equipment is primarily computed 
using the straight-line method over the estimated useful life of the
asset. Leasehold  improvements are amortized using the straight-line 
method over the lesser of the life of the lease or the estimated
useful life of  the improvement.  The general ranges of lives used
in calculating depreciation and amortization are: computer and other
equipment,  2-5 years;  office  furniture  and  equipment,  7 
years;  and  leasehold improvements, 1-10 years.

Computer Software Construction Costs

The Company designs, develops and markets computer software
products. Costs related to the construction of software that are
incurred after the  technological  feasibility of the product has
been  demonstrated are capitalized and amortized over the useful
lives of such software. Computer  software  construction costs are
shown net  of  accumulated amortization  of $47,813 and $32,022 at
December 31, 1997  and  1996, respectively.   Beginning in 1996, the
Company began  amortizing  the software  construction costs related
to new releases  of  the  I-DEAS Master  Series  product  over  a
three year  period  based  upon  the estimated  future  economic 
life of the  product.   Amortization  is calculated  on a
product-by-product basis and is the greater  of  the ratio  that the
current product revenue bears to the total of current and 
anticipated  future years' revenue or the  straight-line  method
over the remaining estimated economic lives of the software
products.

Income Taxes

In accordance with Statement of Financial Accounting Standards
(SFAS) No.  109,  "Accounting  for Income Taxes," deferred  tax 
assets  and liabilities   are   recognized  for  the  future   tax 
consequences attributable to differences between the financial
statement  carrying amounts of assets and liabilities and their
respective tax bases.  As of  December  31,  1997, no benefit was
currently  recognized  for  a substantial  portion of the Company's
U.S. deferred tax assets  since it  is more likely than not that
they will not be realized based upon the Company's current and
anticipated mix over the next four years of domestic  and  foreign
pre-tax accounting income,  tax  credits,  and deductions  from
non-qualified stock option exercises.   The  Company does not accrue
Federal income taxes on undistributed earnings of its foreign 
subsidiaries  that (1) have been, or  are  intended  to  be,
permanently  reinvested or (2) if remitted, would not  have 
material income   tax   consequences.  Undistributed   earnings   of 
foreign subsidiaries amounted to approximately $17,111 at December
31, 1997.

Earnings Per Share

Effective  December  31,  1997,  the  Company  adopted  Statement 
of Financial  Accounting  Standards No 128,  (SFAS  128)  "Earnings 
Per Share"  which  establishes  new  methods  for  the  computation 
and disclosure of earnings per common share.  All earnings per share
data presented  has been restated to conform with the provisions  of 
SFAS 128.  Basic earnings per common share and dilutive earnings per
share are computed using the weighted average number of common and
dilutive common equivalent shares outstanding during the period,
respectively. Dilutive  common equivalent shares are calculated
using the  treasury stock method and consist of stock option grants.

The  reconcilations  of  amounts used  for  the  basic  and 
dilutive earnings per share calculations are as follows:

                                Income        Shares      Per-Share
                            (Numerator)   (Denominator)   Amount

1997                                                           
Basic  net  income  per   
 share                      $30,030        35,265         $  .85
Effect of stock options          --         1,682
                            -------        ------
Dilutive net income per    
 share                      $30,030        36,947         $  .81

1996                                                           
Basic  net  income  per  
  share                     $38,148        34,315          $1.11
Effect of stock options          --         1,975          
                            -------        ------
Dilutive net income  per 
  share                     $38,148        36,290          $1.05

1995                                                           
Basic  net  income  per 
 share                      $(2,809)       32,430          $(.09)
Effect of stock options          --            --             
                            --------       ------
Dilutive income per share   $(2,809)       32,430          $(.09)



Options  to  purchase  3,524  and 1,737 shares  of  common  stock 
at December  31,  1997 and 1996 respectively, were not included  in 
the computation  of  dilutive  earnings per share  because  the 
options' exercise  price was greater than the average market price 
of  common shares.

Reclassification

Certain amounts reported in previous years have been reclassified 
to conform to the 1997 presentation.

(2)  Business Acquisitions

Metaphase Technology, Inc.

In   1992,  the  Company  and  Control  Data  Systems,  Inc.  
(CDSI) established  a  joint  venture company, Metaphase 
Technology,  Inc., (Metaphase),  to  develop  and market PDM 
software  worldwide.   The Company initially owned a 35% interest
and increased such interest to 50% during 1993.  The Company's
investment in Metaphase was accounted for on the equity basis.

In  January  1997,  the  Company  acquired  the  remaining  stock 
of Metaphase and certain assets of CDSI's global PDM software sales 
and support  business.   The  purchase  price  of  approximately 
$33,000 included  cash  and a stock warrant.  The warrant is
exercisable  for 750  shares  of the Company's common stock without
par value  at  the exercise price of $28 per share and expires on
December 31, 1998.   A value  of  $3,500  has been assigned to the
warrant and  recorded  in Shareholders'  equity.  The acquisition
was accounted for  using  the purchase  method.  The Company's
consolidated statement of operations includes  the  operating
results of Metaphase  and  the  CDSI  assets acquired,  beginning
January 1, 1997.  The excess of  purchase  price over  the  fair 
values of the net assets acquired  of  approximately $2,816   was  
recorded  as  goodwill.   Certain  other  intangibles, including   
computer software construction costs, totalled approximately  
$8,555.    All  intangibles   associated   with   the acquisition
are being amortized over their useful lives, which do not exceed 
seven  years.  Also in connection with the  acquisition,  the
Company  recorded a one-time charge to operations of $20,850 for 
the write  off  of  in-process research and development acquired  in 
the transaction that did not have an alternative future use and  had 
not reached technological feasibility.  Pro forma results of the
purchase are not presented as the amounts are not material to the
consolidated financial statements.

Computer Aided Systems for Engineering

In  December 1997, the Company acquired all the outstanding stock 
of two  privately  held  companies doing business together  as 
Computer Aided  Systems  for Engineering, (CASE), by issuing 1,500 
shares  of common  stock  having  an  aggregate market  value  of 
approximately $25,000.    The  acquisition  was  accounted  for  as 
a  pooling-of-interests,  and accordingly, all prior periods have
been restated  to include  CASE  results.  CASE, an S corporation
prior to acquisition, had been a third party developer of drafting
software for the Company since 1984.

Revenue  and  net  income (loss) of the separate  companies  for 
the periods before the acquisition are as follows:

                                  1997         1996       1995
Revenue:
 SDRC                         $351,322      $285,256   $224,138
 CASE                            8,749         7,674      6,581
 Less intercompany sales        (8,749)       (7,674)    (6,581)
                               --------      -------    -------
   Total revenue              $351,322      $285,256   $224,138
                               --------      -------    --------
Net income (loss):
 SDRC                         $ 24,342      $ 33,689   $ (7,471)
 CASE                            5,688         4,459      4,662
                               -------       -------    --------
   Net income (loss)          $ 30,030      $ 38,148   $ (2,809)
                               =======       =======    ========

Adjustments recorded to adopt the same accounting practices were 
not material  to  the  consolidated  financial  statements.  
Acquisition charges were not material.

(2)  Business Acquisitions - (continued)

Camax Manufacturing Technologies, Inc.

In  June  1996,  the  Company  completed  the  acquisition  of 
Camax Manufacturing   Technologies,  Inc.  (Camax)  and  its  
wholly-owned subsidiaries.  Camax  provides computer-aided
manufacturing  software for  computerized-numerical-control
machining operations.  The  Camax products and services are designed
to simplify, automate and optimize the machining process to
streamline production and accelerate time-to-market.

In  exchange  for 100 percent ownership of Camax common  stock, 
SDRC issued  approximately  967  shares of  SDRC  common  stock  and 
paid approximately $1,236 to a Camax shareholder who exercised
dissenter's rights.    The  market  value  of  the  shares  and 
cash  paid   was approximately $30,000. Acquisition charges of
$1,102 were recorded in the  second quarter of 1996.  The
acquisition was accounted for as  a pooling-of-interests.  All
historical financial data of  the  Company was  restated  to 
include  the results  of  Camax  for  all  periods presented.

Revenue  and  net  income (loss) of the separate  companies  for 
the periods before the acquisition are as follows:

                           Three months ended    Year ended
                              March 31,          December 31,
                                1996                1995
Revenue:
 SDRC                          $60,971            $204,084
 Camax                           4,078              20,054
                               -------            ---------
   Total revenue               $65,049            $224,138
Net income (loss):                          
 SDRC                          $ 7,919            $ (3,805)
 Camax                            (504)                996
                              --------            --------
   Net income (loss)           $ 7,415            $ (2,809)
                              ========            ========

Adjustments recorded to adopt the same accounting practices were 
not material to the consolidated financial statements.

SDRC Software and Services, GmbH

In  1994,  the  Company formed a joint venture with  Siemens 
Nixdorf Informationssysteme AG and in 1995, purchased the remaining 
interest of  SDRC  GmbH.  The acquisition was accounted for using
the purchase method.  As of the acquisition date, 100% of the
operating results of SDRC GmbH are included in the consolidated
financial statements.  Pro forma  results of the purchase are not
presented as the  amounts  are not material to the consolidated
financial statements.

ESTECH Corporation

In 1989 the Company and Nissan Motor Co., Ltd. established a
Japanese joint   venture  company,  ESTECH  Corporation  (ESTECH) 
to  provide engineering  services  in  Japan and  the  Asia-Pacific 
areas.   The Company  owns a 30% interest in ESTECH and accounts for
it under  the equity  method.   The impact of its results are not
material  to  the Company's results of operations.

(3)    Marketable Securities
Marketable Securities consist of the following:

                             December 31, 1997
              Amortized    Unrealized   Unrealized   Estimated
                 Cost         Gains      Losses      Fair Value
Current:                                                     
Available 
  for sale        $12,916     $  9      $   (2)     $12,923
Held to maturity      107       --          --          107
                   ------     -----      ------      ------
                  $13,023     $  9      $   (2)     $13,030
Non Current:                                                 
Available 
  for sale        $14,943     $ 42      $  (60)     $14,925


(3)  Marketable Securities - (continued)

                                December 31, 1996

                     Amortized  Unrealized  Unrealized  Estimated
                        Cost      Gains     Losses      Fair Value
                                                             
Current:                                                     
   Available for sale    $18,468  $  34          -       $18,502
Non Current:                                                 
   Available for sale    $10,572  $  12     $  (75)      $10,509

Non current, available-for-sale marketable securities at December
31, 1997,  have maturities of $14,029 in 1999 and $896 in 2013. 
Realized gains   and  losses  on  the  sale  of  marketable 
securities   were immaterial.

(4)  Property and Equipment
                                                December 31
Property and equipment, 
recorded at cost, consist of the following:
                                              1997       1996
Property and equipment, at cost:                             
 Computer and other equipment            $57,364       $49,580
 Office furniture and equipment           16,983        14,535
 Leasehold improvements                    6,685         5,695
                                          ------        ------
                                          81,032        69,810
Less accumulated depreciation and 
amortization                             (56,405)      (48,785)
                                         -------       -------
   Net property and equipment            $24,627       $21,025
                                         =======       =======

Future  minimum  lease payments under noncancelable operating 
leases for  the  five  years  ending December 31, 2002 approximate 
$17,538, $14,400,  $9,530,  $6,961  and  $6,081,  respectively,  and 
 $42,512 thereafter.   Total rental expenses under operating  leases 
for  the years  ended December 31, 1997, 1996 and 1995 were $19,604, 
$16,426, and $14,576, respectively.

(5)  Income Taxes







Pre-tax accounting income (loss) consists     
of the following:
                                       Year ended December 31
                                  1997       1996       1995
 Domestic                       $25,741    $32,236    $(1,502)
 Foreign                         15,798     14,548      5,872
                                 ------     ------     ------
                                $41,539    $46,784    $ 4,370

The provision for income taxes consists       
of the following:

                                        Year ended December 31
                                    1997       1996        1995
Federal:                                                           
 Current                          $   740     $ 1,234     $   35
 Deferred                            (740)     (2,125)       563
                                   -------     -------   -------
                                       --        (891)       598
State:                              1,200       1,418        282
Foreign:                                                           
 Income taxes                       5,520       3,125      2,215
 Withholding taxes                  4,789       4,984      4,084
                                   ------      ------     ------
Actual income tax expense         $11,509     $ 8,636     $7,179

Deferred state and foreign taxes are not material.
<PAGE>
<TABLE>
(5)  Income Taxes - (continued)

The  provision for income taxes differs from the amounts computed  by using  the  statutory U.S.
Federal income tax rate.  The reasons  for the differences are as follows:

<CAPTION>


                                              Year ended December 31
                                            1997       1996       1995
<S>                                       <C>        <C>        <C>
Computed expected income tax expense      $14,539    $16,374    $ 1,530
Increase (reduction) resulting from:                               
 Purchased in-process research and
  development                               7,297         --         --
 Foreign withholding taxes, 
   without current benefit                     --         --      4,084
 Foreign income taxed at other than the                            
  U.S. statutory rate                          57     (1,966)       160
 U.S. losses without tax benefit               --         --      2,157
 Utilization of U.S. tax carryforwards     (9,721)    (4,806)        --
 S corporation benefit                     (1,934)    (1,516)    (1,585)
 Change in net deferred taxes                (828)    (2,125)       563
 Alternative minimum taxes                    740      1,125         --
 State taxes, net of federal benefit          780        922        282
 Other                                        579        628        (12)
                                          -------     ------     -------
   Actual Income tax expense              $11,509    $ 8,636    $ 7,179

</TABLE>

<TABLE>
The  tax  effects  of temporary differences that  give  rise  to  the
deferred tax assets and deferred tax liabilities are as follows:

<CAPTION>
                                                      December 31
                                                   1997       1996
<S>                                            <C>          <C>
Deferred tax assets:                                          
 Revenue recognition and accounts receivable   $ 2,753     $ 2,580
 Property and equipment                          1,663       1,114
Computer software construction costs and                     
 capitalized research expenses, net of 
 amortization                                   15,624      10,794
 Accrued lawsuit settlement                          -       3,536
 Other liabilities and reserves                  4,526       5,006
 Tax credit and net operating loss              
  carryforwards                                  9,291      12,482
 Other                                             608       1,450
                                                ------      ------
    Total deferred tax assets                   34,465      36,962
 Valuation allowance                           (31,538)    (34,837)
                                               -------     -------
 Net deferred tax assets                         2,927       2,125
                                               -------     -------
     Deferred tax liabilities                       --          --
                                               -------     -------
     Total net deferred taxes                  $ 2,927     $ 2,125
                                               =======     =======
</TABLE>

<PAGE>
Of  the  $9,291 in tax carryforwards available at December 31, 
1997, $252  expire in the years 1998 through 2000 and the remainder 
expire thereafter.   Alternative minimum tax carryforwards of 
$2,927  never expire.

The net change in the valuation allowance for deferred tax assets
was a  decrease of $3,299 and $1,676 in 1997 and 1996, respectively. 
 Of the  $31,538 in valuation allowance at December 31, 1997,
$18,732  is attributable  to  the  tax benefit of stock option 
exercises.   Such benefits  will  be credited to capital in excess
of stated  value  if realized.

(6)  Shareholders' Rights Plan

In  1988, the Board of Directors adopted a Shareholders' Rights 
Plan to  protect  shareholders' interests in the event of  an 
unsolicited attempt  to  gain  control of the Company.  Under  the 
Shareholders' Rights Plan, shareholders are granted certain rights
in the event  of a  triggering  event (Rights).  The Rights become 
exercisable  if  a person acquires 20% or more of the Company's
outstanding common stock or  announces a tender offer which would
result in a person or  group acquiring  20% or more of the common
stock (Distribution Date).   If, at  any  time  following the
Distribution Date, the Company  has  not redeemed the Rights, the
Company becomes the surviving corporation in a  merger or a person
becomes the beneficial owner of 20% or more  of the  Company's
common stock (Triggering Date), each holder of a Right will  have
the right to purchase shares of the Company's common stock having a
value equal to two times the Right's exercise price of $110. If,  at 
any  time  following the Triggering  Date,  the  Company  is
acquired  in  a  merger or other business combination transaction 
in which the Company is not the surviving corporation, each holder
of  a Right shall have the right to purchase shares of common stock
of  the acquiring  company  having a value equal to two  times  the 
exercise price of the Right.  The Rights expire on August 10, 1998,
and may be redeemed by the Company for $.0025 per Right.

 (7)      Common Stock and Employee Benefit Plans

Stock Option Plans

Under  the 1991 Employee Stock Option Plan, the Company has 
reserved 5,300  shares of previously unissued common stock.   Under
the  plan, options  to  purchase  shares may be granted  to  key 
employees  and executive officers at the fair market value at the
date of grant. 

In  1991,  the  adoption  of the Director's  Non-Discretionary 
Stock Option Plan converted the Amended and Restated 1986 Stock
Option Plan into  a  non-discretionary  plan allowing future  grants 
to  outside directors  at the fair market value at the date of
grant.  Under  the original  1986  plan,  the  Company  had 
reserved  7,000  shares  of previously  unissued  common stock. The 
status  of  all  outstanding options previously granted to employees
remained unchanged. 

(7)  Common Stock and Employee Benefit Plans - (continued)

Stock Option Plans - continued

In  1994, the shareholders adopted the 1994 Long-Term Stock
Incentive Plan,  allowing  stock  incentives  including  stock 
options,  stock appreciation rights, stock awards, and any
combination to be  granted to  employees.   The  number of shares
with respect  to  which  stock incentives may be granted in one
calendar year shall not exceed 4% of the   Company's  issued  and 
outstanding  common  stock.   No  stock incentives  other than
non-qualified stock options have been  granted under the 1994 plan.

Under  the plans, employee options expire ten years from the date 
of grant and are exercisable as follows: 33% on the first
anniversary of the  grant date; an additional 34% on the second
anniversary; and all or  any  remaining options on the third
anniversary until expiration. Director  options expire five years
from the date of  grant  and  are exercisable 50% upon expiration of
six months from the grant date and all  or  any remaining options on
the first anniversary of the  grant date until expiration.

With  the acquisition of Camax on June 30, 1996, the Company 
assumed approximately  175  outstanding stock  options  representing 
all  of Camax's  obligations  under  five existing  stock  option 
plans  and certain  out-of-plan options.  The assumed stock  options 
and  stock appreciation rights were generally granted to employees
and directors of  Camax at 100% of the market value at the date of
grant and expire ten  years from date of grant.   No additional
stock options will  be granted under the Camax plans.


<PAGE>
<TABLE>


<CAPTION>
                December 31, 1997     December 31, 1996    December 31, 1995

                          Weighted            Weighted             Weighted
                          Average             Average              Average
                 Stock    Exercise   Stock    Exercise    Stock    Exercise
                 Options  Price      Options  Price       Options  Price
<S>                <C>    <C>        <C>      <C>        <C>       <C>
Outstanding at                                                 
 beginning    
 of the year       4,945  $17.10      5,008   $12.09      7,289    $12.58
   Granted         2,190  $22.33      1,337   $30.09      1,143    $ 7.54
   Exercised        (931) $11.74     (1,169)  $11.11     (1,510)   $ 7.90
   Cancelled        (407) $22.81       (231)  $13.93     (1,914)   $14.90

Outstanding at                                                 
 end of the year   5,797  $19.54      4,945   $17.10      5,008    $12.09

Options                                                        
exercisable  
   at yearend      2,891  $15.89      2,935   $13.71      3,227    $13.36

</TABLE>

 (7)      Common Stock and Employee Benefit Plans - (continued)

Stock Option Plans - continued

<TABLE>
Information regarding options outstanding as of December 31, 1997  is
as follows:

<CAPTION>

                                 Options Outstanding      Options Exercisable
                                Weighted                             
                                Average      Weighted                Weighted
                                Remaining    Average                 Average
Range of            Number      Contractual  Exercise  Number        Exercise
Exercise Prices   Outstanding   Life         Price     Exercisable   Price

<S>                 <C>            <C>       <C>        <C>          <C>
$ 3.44 - $ 6.31       680          5.45        5.96       494          5.84
$ 7.22 - $11.13       581          4.89       10.76       577         10.77
$12.19 - $16.25       880          4.55       15.39       878         15.39
$16.63 - $20.06       598          8.70       18.18       129         17.39
$20.13 - $22.44       513          4.82       20.68       362         20.17
$22.50                877          9.12       22.50        --            --
$22.63 - $26.31       613          9.13       25.10        32         24.30
$26.75 - $29.13        59          5.90       28.77        44         28.81
$29.53                  6          9.71       29.53        --            --
$31.25                990          8.05       31.25       375         31.25
- - ---------------     -----          ----       -----    ------         -----
$ 3.44 - $31.25     5,797          6.93      $19.54     2,891        $15.89
</TABLE>

<PAGE>
Stock Purchase Plan

Under  the Stock Purchase Plan, all domestic full-time employees 
who are  non-executive  officers are entitled to purchase  the 
Company's common  stock  at  90% of fair market value.  Employees 
electing  to participate must contribute at least 1% with a maximum
of 10% of  the participant's base salary and commissions each month. 
All incidental expenses related to the issuance of these shares,
including  the  10% discount,  have  been  charged to income.   The 
plan  has  no  fixed expiration date, may be terminated by the
Company at any time and has no limitation on the number of shares
that may be issued.

Other Employee Benefit Plans

The   Company  provides  retirement  benefits  to  substantially 
all employees   through  defined  contribution  plans.    The  
Company's contributions are primarily based on employee compensation
and  years of  service.   Expenses related to the 401(k) Plan and
other  defined contribution  plans were approximately $3,967, $3,225
and  $3,044  in 1997, 1996 and 1995, respectively.

The  Structural  Dynamics Research Corporation Tax  Deferred 
Capital Accumulation  Plan  (401(k)  Plan) is  a  defined 
contribution  plan covering  all  salaried employees of the domestic 
divisions  of  the Company.    Employees may make contributions to
the  401(k)  Plan  by authorizing a reduction of their compensation
of at least 1% up to  a maximum of 15%.   The Company may provide a
matching contribution  in the  form  of  Company  stock or cash
equal to 50%  of  the  employee contribution,  up  to  a maximum of
6% of the employee  compensation. Participants  are immediately
vested in their voluntary contributions and  are  vested  in the
Company contributions after three  years  of continuous service.

The  Company provides severance benefits for involuntarily
terminated employees  based on employees' prior years of service. 
The Company's obligation  for these post employment benefits is
recorded  in  other long-term liabilities.


(7)  Common Stock and Employee Benefit Plans - (continued)

Stock-Based Compensation

The Company accounts for stock options in accordance with APB No.
25, "Accounting   for  Stock  Issued  to  Employees."   Accordingly, 
 no compensation  cost has been recognized in results of  operations 
for stock  option  grants.  The Company has adopted  the 
disclosure-only provisions   of   SFAS   No.   123,   "Accounting  
for   Stock-Based Compensation."  Had compensation cost for the
Company's stock  option plans  been determined based on the fair
value at the grant date  for awards  in  1997,  1996  and 1995, and
allocated  over  the  options' vesting  date  consistent with the
provisions of SFAS  No.  123,  the Company's  net income (loss) and
income (loss) per share  would  have been reduced to the pro forma
amounts as follows: 
                                   1997        1996         1995
Net income (loss) - as reported  $30,030      $38,148    $(2,809)
Net income (loss) - pro forma     19,758       32,727     (3,885)
Dilutive income (loss) per    
 share - as reported             $   .81      $  1.05    $  (.09)
Dilutive income (loss) per  
 share - pro forma               $   .53      $   .90    $  (.12)

The  pro  forma effect on the Company's net income (loss) and 
income (loss) per share for 1997, 1996 and 1995 is not
representative of the pro forma effect in future years.  The pro
forma effect does not take into  consideration compensation expense
related to grants made prior to 1995 or additional grants in future
years which are anticipated.

The fair value of each option is estimated on the date of grant
using the  Black-Scholes option-pricing model with the following 
weighted-average  assumptions used for grants: dividend yield of 0%; 
expected terms  of  3 years; expected volatility of 57% for 1997 and 
63%  for 1996  and 1995; and risk-free interest rate of 5.7% for
1997 and 5.6% for  1996  and  1995.   The weighted average fair 
value  of  options granted  was  $10.07,  $13.76  and $3.69  in 
1997,  1996  and  1995, respectively.

(8) Commitments and Contingencies

Except  for  the  following matters, SDRC  is  not  a  party  to 
any litigation other than ordinary routine litigation incidental  to 
its business.   The  Company  was a defendant  in  a  class  action 
suit alleging violations of certain federal securities laws,
captioned  In Re:  Structural Dynamics Research Corporation
Securities  Litigation, United States District Court, Southern
District of Ohio, Consolidated Master  File No. C-1-94-630.   In
December 1995, the parties to  this matter  entered  into a
Memorandum of Understanding  for  settlement, subject  to  final 
Court approval.  On March  22,  1996,  the  Court approved  the 
proposed  settlement and a final  order  was  entered. Pursuant  to 
the  order,  a settlement fund  of  $37.5  million  was established, 
consisting  of  $17.6  million  cash  provided  by  the Company, 
$10.0  million  in  shares of the  Company's  common  stock (valued 
on the market price at the time of distribution),  and  $9.9 million 
cash  provided by the Company's former accountants.   During 1997,
the Company issued common stock of $10 million to finalize  its
contribution  to  the  settlement  fund.   The  settlement  does 
not constitute  an  admission of liability on the part of any 
defendant. The  Company's Board of Directors determined that the
settlement  was in  the best interest of the Company and its
shareholders in light of the   uncertainty  of  the  outcome,  the 
high  cost  of   continued litigation,  and  the  high level of
management  time  and  attention continued litigation would have
required which could be better  spent on the Company's business.

The  Company  was  a  party  to shareholders'  derivative 
litigation captioned  In Re: Structural Dynamics Research
Corporation Derivative Litigation, United States District Court,
Southern District of  Ohio, Consolidated  Master  File  No.
C-1-94-650.   The  Company  paid  the plaintiffs' counsel fees of
approximately $900 and $50 for their out-of-pocket  expenses in full
settlement of the matter.   The  parties' agreement  was approved by
the United States District Court  on  July 19, 1996.

(8)  Commitments and Contingencies - (continued)

Pursuant  to certain contractual obligations, the Company has 
agreed to  indemnify  its directors and officers under certain
circumstances against  claims arising from lawsuits.  The Company
may be  obligated to indemnify certain of its directors and officers
for the costs they may incur as a result of the lawsuits.

(9)  Other Income, Net
                                     Year ended December 31

Other income, net consists of:     1997     1996       1995
Interest income                   $5,201  $ 4,593    $ 3,697
Loss on sale of UK test and  
 analysis division                    --       --     (1,878)
Other                               (682)  (1,377)      (553)
                                  -------  -------    -------
 Other income, net                $4,519  $ 3,216    $ 1,266
                                  =======  =======    =======

In July 1995, SDRC sold its test and analysis division located in
the United  Kingdom  to  MascoTech Engineering  Europe  Limited  for 
net proceeds of $524 and realized a loss on the sale of $1,878.  The
loss includes foreign currency losses and estimated costs pertaining
to  a lease commitment.

Other consists of net foreign currency exchange gains and losses
and, in 1996, the derivative litigation settlement.

(10)  Segment and Geographic Information

The  Company operates in a single industry segment providing
software and  related  services  to manufacturers for  the  design, 
analysis, testing, and manufacture of mechanical products and the
management of associated product information.


<PAGE>
<TABLE>

<CAPTION>

                                             Operating        Identifiable
Financial  data  by  geographic   Revenue     Income (Loss)     Assets   
area is as follows:
<S>                               <C>         <C>               <C>
                                        Year ended December 31, 1997
North America                     $171,003    $ 30,323          $105,178
Europe                             107,153      18,951            57,629
Asia-Pacific                        73,166      24,303            22,754
Corporate                               --     (15,668)          107,635
Purchased in-process research                             
 and development                        --     (20,850)               --
                                  --------     --------         ---------
 Consolidated                     $351,322    $ 37,059          $293,196
                                  ========     =========        =========

                                        Year ended December 31, 1996
North America                     $136,532    $ 21,570          $ 82,433
Europe                              80,275      17,360            47,470
Asia-Pacific                        68,449      17,929            18,737
Corporate                               --     (11,959)           90,732
                                   -------     --------          --------
 Consolidated                     $285,256    $ 44,900          $239,372
                                   =======     ========          ========    

                                        Year ended December 31, 1995
North America                     $102,271    $ 14,443          $ 71,063
Europe                              61,420       9,195            39,024
Asia-Pacific                        60,447      16,155            14,637
Corporate                               --     (11,438)           82,949
                                   --------    -------          --------
 Consolidated                     $224,138    $ 28,355          $207,673
                                   ========    =======          ========
</TABLE>
<PAGE>

(11)  Quarterly Results of Operations (Unaudited)
The following table sets forth selected unaudited quarterly
financial information  for  1997  and  1996.  The  Company  believes 
that  all necessary  adjustments  have  been included  to  present 
fairly  the selected quarterly information.

<PAGE>

<TABLE>


<CAPTION>
                                Three months ended                           Year ended
                    March 31,    June 30,   September 30,   December 31,     December 31,
1997                   1997        1997           1997          1997             1997
<S>                  <C>           <C>           <C>           <C>             <C>
Revenue              $ 80,864      $88,678       $86,738       $95,042         $351,322
Gross profit           52,904       58,507        55,729        63,738          230,878
Net income (loss)     (11,167)      11,633        12,752        16,812           30,030
Basic earnings (loss)
 per share               (.32)         .33           .36           .47              .85 *
Dilutive earnings 
(loss) per share         (.32)         .32           .34           .46              .81 *

                                 Three months ended                            Year ended
                     March 31,   June 30,  September 30,   December 31,       December 31,
1996                   1996        1996        1996           1996               1996
<S>                  <C>           <C>         <C>             <C>             <C>
Revenue              $ 65,049      $66,669       $71,777       $81,761         $285,256
Gross profit           47,728       47,460        51,524        58,045          204,757
Net income              7,415        7,697         9,616        13,420           38,148
Basic earnings per  
 share                    .22          .22         .28             .39             1.11 *
Dilutive earnings per
 share                    .21          .21         .27             .37             1.05 *


*  Per share amounts are not additive.
</TABLE>
<PAGE>

(12)  Common Stock Information (Unaudited)
The  Company's  common  stock is listed and traded  on  the 
National Association  of  Securities       Dealers, Inc.  Automatic 
Quotation (NASDAQ) National Market System.

The  high and low bid prices per share for the Company's common
stock as reported on the NASDAQ National Market System are contained
in the table  below.   Such quotations reflect inter-dealer  prices 
without retail  mark-up,  mark-down  or commission.    The  Company 
paid  no dividends  in  1997 or 1996  and intends to continue  its 
policy  of retaining earnings to finance future growth. There were
approximately 2,400 shareholders of record as of December 31, 1997.

                        Three months ended
           March 31,  June 30,    September 30,  December 31,
            1997        1997        1997            1997
High         26       27 5/8         30            25 7/8
Low      19 1/8      18 7/16     23 3/4            15 1/4

                         Three months ended
           March 31,  June 30,    September 30,  December 31,
            1996        1996           1996        1996
High     35 1/2       37 3/8        27 1/4         24 1/4
Low      22 1/4       19 1/2            15         17 1/8




Exhibit 21
                                   
                                   
       STRUCTURAL DYNAMICS RESEARCH CORPORATION AND SUBSIDIARIES
                    SUBSIDIARIES OF THE REGISTRANT





                                             State or Other
                                             Jurisdiction
Name                                         of Incorporation
                                             
SDRC CASE/Inc.                               Ohio
SDRC Brasil Limitada                         Brazil
SDRC U.K. Limited                            United Kingdom
SDRC Italia, Srl.                            Italy
SDRC Korea Limited                           South Korea
SDRC Svenska AB                              Sweden
SDRC Singapore Pte. Ltd.                     Singapore
SDRC Nederland B.V.                          Netherlands
SDRC AG                                      Switzerland
SDRC Belgium N.V./S.A.                       Belgium
SDRC France S.A.                             France
SDRC Espaua, S.A.                            Spain
SDRC Japan K.K.                              Japan
SDRC Software and Services, GmbH             Germany
Point Control International Sales            Virgin Islands
Corporation



Note: All  of the above corporations are wholly owned subsidiaries
     of the Registrant directly or indirectly.

Exhibit 23



                  Consent of Independent Accountants


We  hereby  consent  to  the incorporation  by  reference  in  the
Registration Statements on Form S-8 (Nos. 33-20774, 33-22136,  33-
40561,  33-41671, 33-58701, 33-72328 and 33-07365)  of  Structural
Dynamics Research Corporation of our report dated January 23, 1998
appearing  on  page 33 of the 1997 Annual Report  to  Shareholders
which is incorporated in this Annual Report on Form 10-K. We  also
consent  to  the incorporation by reference of our report  on  the
Financial Statement Schedule, which appears in this Form 10-K.


/s/Price Waterhouse LLP
Price Waterhouse LLP
Cincinnati, Ohio
March 27, 1998


                                   
                   Report of Independent Accountants



To the Board of Directors
of Structural Dynamics Research Corporation


Our  audits of the consolidated financial statements referred to in
our report  dated January 23, 1998 appearing on page 33 of the 1997 
Annual Report  to  Shareholders  of Structural Dynamics  Research 
Corporation (which report and consolidated financial statements are
incorporated by reference in this Annual Report on Form 10-K) also
included an audit of the Financial Statement Schedule listed in Item
14 (a) of this Form 10-K.   In  our opinion, the Financial Statement
Schedule presents fairly, in  all material respects, the information
set forth therein when  read in conjunction with the related
consolidated financial statements.





/s/Price Waterhouse LLP
Price Waterhouse LLP
Cincinnati, Ohio
January 23, 1998








Schedule II

       STRUCTURAL DYNAMICS RESEARCH CORPORATION AND SUBSIDIARIES
                   VALUATION AND QUALIFYING ACCOUNTS
             YEARS ENDED DECEMBER 31, 1997, 1996, AND 1995

                            (in thousands)



                Balance    Charged                  Balance
              at Beginning (Credited)  Deductions/  at End
Description   of Period    to Income  (Recoveries)  of Period
                                                           
Accounts 
Receivable:

Year ended        
December 31,       $3,100      (273)         307      $2,520 
1995

Year ended
December 31,       $2,520     2,689        1,928      $3,281
1996
                                                           
Year ended   
December 31,       $3,281     1,005          757      $3,529       
1997





<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                          81,056
<SECURITIES>                                    27,955
<RECEIVABLES>                                  106,769
<ALLOWANCES>                                   (3,529)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               209,937
<PP&E>                                          81,032
<DEPRECIATION>                                (56,405)
<TOTAL-ASSETS>                                 293,196
<CURRENT-LIABILITIES>                          107,608
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           248
<OTHER-SE>                                     177,589
<TOTAL-LIABILITY-AND-EQUITY>                   293,196
<SALES>                                        351,322
<TOTAL-REVENUES>                               351,322
<CGS>                                          120,444
<TOTAL-COSTS>                                  193,819
<OTHER-EXPENSES>                               (4,480)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 41,539
<INCOME-TAX>                                    11,509
<INCOME-CONTINUING>                             30,030
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    30,030
<EPS-PRIMARY>                                      .85
<EPS-DILUTED>                                      .81
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                          89,732
<SECURITIES>                                    31,755
<RECEIVABLES>                                   86,249
<ALLOWANCES>                                   (3,854)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               202,248
<PP&E>                                          78,579
<DEPRECIATION>                                (54,936)
<TOTAL-ASSETS>                                 281,913
<CURRENT-LIABILITIES>                          117,659
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           244
<OTHER-SE>                                     155,964
<TOTAL-LIABILITY-AND-EQUITY>                   281,913
<SALES>                                        256,280
<TOTAL-REVENUES>                               256,280
<CGS>                                           89,140
<TOTAL-COSTS>                                  147,427
<OTHER-EXPENSES>                               (2,871)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 22,584
<INCOME-TAX>                                     9,366
<INCOME-CONTINUING>                             13,218
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    13,218
<EPS-PRIMARY>                                      .38
<EPS-DILUTED>                                      .36
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                          83,253
<SECURITIES>                                    26,107
<RECEIVABLES>                                   80,742
<ALLOWANCES>                                   (3,723)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               191,021
<PP&E>                                          77,716
<DEPRECIATION>                                (53,860)
<TOTAL-ASSETS>                                 265,602
<CURRENT-LIABILITIES>                          118,220
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           241
<OTHER-SE>                                     138,666
<TOTAL-LIABILITY-AND-EQUITY>                   265,602
<SALES>                                        169,542
<TOTAL-REVENUES>                               169,542
<CGS>                                           58,131
<TOTAL-COSTS>                                  106,651
<OTHER-EXPENSES>                               (1,660)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  6,420
<INCOME-TAX>                                     5,954
<INCOME-CONTINUING>                                466
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       466
<EPS-PRIMARY>                                      .01
<EPS-DILUTED>                                      .01
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                          48,268
<SECURITIES>                                    29,771
<RECEIVABLES>                                   85,137
<ALLOWANCES>                                   (3,654)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               166,248
<PP&E>                                          74,040
<DEPRECIATION>                                (51,765)
<TOTAL-ASSETS>                                 240,281
<CURRENT-LIABILITIES>                          107,838
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           239
<OTHER-SE>                                     123,251
<TOTAL-LIABILITY-AND-EQUITY>                   240,281
<SALES>                                         80,864
<TOTAL-REVENUES>                                80,864
<CGS>                                           27,960
<TOTAL-COSTS>                                   61,593
<OTHER-EXPENSES>                                 (544)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                (8,145)
<INCOME-TAX>                                     3,022
<INCOME-CONTINUING>                           (11,167)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (11,167)
<EPS-PRIMARY>                                    (.32)
<EPS-DILUTED>                                    (.32)
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<CASH>                                          72,026
<SECURITIES>                                    29,011
<RECEIVABLES>                                   69,672
<ALLOWANCES>                                   (3,281)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               168,118
<PP&E>                                          69,810
<DEPRECIATION>                                (48,785)
<TOTAL-ASSETS>                                 239,372
<CURRENT-LIABILITIES>                           99,544
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           238
<OTHER-SE>                                     130,309
<TOTAL-LIABILITY-AND-EQUITY>                   239,372
<SALES>                                        285,256
<TOTAL-REVENUES>                               285,256
<CGS>                                           80,499
<TOTAL-COSTS>                                  159,857
<OTHER-EXPENSES>                               (1,884)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 46,784
<INCOME-TAX>                                     8,636
<INCOME-CONTINUING>                             38,148
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    38,148
<EPS-PRIMARY>                                     1.11
<EPS-DILUTED>                                     1.05
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               SEP-30-1996
<CASH>                                          73,689
<SECURITIES>                                    29,481
<RECEIVABLES>                                   55,434
<ALLOWANCES>                                   (2,948)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               153,328
<PP&E>                                          65,318
<DEPRECIATION>                                (46,693)
<TOTAL-ASSETS>                                 216,213
<CURRENT-LIABILITIES>                           89,132
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           237
<OTHER-SE>                                     117,692
<TOTAL-LIABILITY-AND-EQUITY>                   216,213
<SALES>                                        203,495
<TOTAL-REVENUES>                               203,495
<CGS>                                           56,783
<TOTAL-COSTS>                                  117,184
<OTHER-EXPENSES>                                 (853)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 30,381
<INCOME-TAX>                                     5,653
<INCOME-CONTINUING>                             24,728
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    24,728
<EPS-PRIMARY>                                      .72
<EPS-DILUTED>                                      .68
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                          69,661
<SECURITIES>                                    29,804
<RECEIVABLES>                                   51,931
<ALLOWANCES>                                   (4,061)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               143,998
<PP&E>                                          62,521
<DEPRECIATION>                                (45,028)
<TOTAL-ASSETS>                                 206,986
<CURRENT-LIABILITIES>                           89,723
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           237
<OTHER-SE>                                     107,930
<TOTAL-LIABILITY-AND-EQUITY>                   206,986
<SALES>                                        131,718
<TOTAL-REVENUES>                               131,718
<CGS>                                           36,530
<TOTAL-COSTS>                                   76,414
<OTHER-EXPENSES>                                 (155)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 18,929
<INCOME-TAX>                                     3,817
<INCOME-CONTINUING>                             15,112
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    15,112
<EPS-PRIMARY>                                      .44
<EPS-DILUTED>                                      .42
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               MAR-31-1996
<CASH>                                          70,460
<SECURITIES>                                    18,572
<RECEIVABLES>                                   55,112
<ALLOWANCES>                                   (3,071)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               141,553
<PP&E>                                          59,452
<DEPRECIATION>                                (43,134)
<TOTAL-ASSETS>                                 200,387
<CURRENT-LIABILITIES>                           92,413
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           235
<OTHER-SE>                                      98,267
<TOTAL-LIABILITY-AND-EQUITY>                   200,387
<SALES>                                         65,049
<TOTAL-REVENUES>                                65,049
<CGS>                                           17,321
<TOTAL-COSTS>                                   39,368
<OTHER-EXPENSES>                                 (844)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  9,204
<INCOME-TAX>                                     1,789
<INCOME-CONTINUING>                              7,415
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     7,415
<EPS-PRIMARY>                                      .22
<EPS-DILUTED>                                      .21
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-END>                               DEC-31-1995
<CASH>                                          64,894
<SECURITIES>                                    20,196
<RECEIVABLES>                                   68,303
<ALLOWANCES>                                   (2,520)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               155,211
<PP&E>                                          56,213
<DEPRECIATION>                                (41,589)
<TOTAL-ASSETS>                                 207,673
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