STRUCTURAL DYNAMICS RESEARCH CORP /OH/
10-K405, 1999-03-31
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, 1998
                                   
          STRUCTURAL DYNAMICS RESEARCH CORPORATION
                                   
 An Ohio Corporation  I.R.S. Employer Identification No. 31-0733928
                                   
           2000 Eastman Drive, Milford, Ohio 45150 
              Telephone Number (513) 576-2400
                          __________________
                                   
   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. [X]
                          __________________

   As  of  March  18,  1999, 35,642,423 shares  of  Common  Stock  were
outstanding.  The  aggregate  market value  of  Common  Stock  held  by
non-affiliates was $424,984,714 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, 1998.
                     Part I, Part II and Part IV
                                   
Registrant's definitive Proxy Statement dated April 1, 1999.
                     Part II, Part III and Part IV


                                PART I
                                   
Factors That May Affect Future Results

       Information   in  this  report  may  contain  forward-looking
statements which  are based on the estimates and assumptions of 
management  at the time such statements are made.  Actual  results
could  differ  materially  from those disclosed  in  any  forward-
looking statement as a result of risks and uncertainties, some  of
which are described in more detail in the "Factors That May Affect
Future  Results"  section of Item 7 "Management's  Discussion  and
Analysis  of Financial Condition and Results of Operations"  which
is  incorporated herein by reference to pages 23 through 31 of the
Company's 1998 Annual Report to Shareholders.

Item 1:   Description of Business

General

       Structural  Dynamics Research Corporation  (the  "Company"  or
"SDRC")  is  a  leading developer and supplier of enterprise-wide, product 
development  software  for mechanical  design  automation ("MDA")  and
product data management ("PDM").  Customers  use  the Company's  software 
to  develop mechanical  products  and  manage information  about their
products.  The Company's MDA software  is an  integrated  CAD/CAM/CAE
(computer-aided design, computer-aided manufacturing and computer-aided
engineering) solution which helps  manufactures   streamline  product 
development  processes   while  reducing  time  and  cost.  The Company's 
PDM  software  collects  comprehensive information across product life
stages  and  readily  distributes  the  information  to  users,  allowing 
companies  to leverage  their knowledge to develop products better  and 
faster. Complementing  its  software  tools,  the  Company  supports   its
customers  with  training, software implementation and  consulting  
services through its professional services staff.

     The  Company's  products and services  are  most  valuable  to
companies  seeking  to accelerate their time  to  market  for  new
products,  in  response to increased competition, while  designing   and 
manufacturing mechanical products in accordance with specific   quality 
and  cost criteria.  A broad range of customers  use  the   Company's  
software   tools  and  services   with   the   highest   concentration of
users in the automotive, electronics,  industrial   machinery and
aerospace industries.

      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 
CAD/CAM/CAE 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.   In  1987,  the  Company made its initial
public stock offering.

      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. ("MTI") as a joint  venture 
company  to  develop PDM software.  In January 1997,  the  Company 
acquired the remaining stock of MTI and certain assets of  Control  Data 
Systems,  Inc.'s  global  PDM  software  sales  and  support  business. 
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   software  drafting  modules.  The acquisition
provided  SDRC  with  full  control  of  its product development for 
drafting  and  the  opportunity  to  facilitate the creation  of  new 
products.   The  Company   acquired   Imageware  Corporation ("Imageware")
in   November   1998.  Imageware  is  a  developer of free form
surface-modeling  and  3D  inspection  software  tools  for  the 
automotive,  aerospace  and  consumer  products  industries.  The Company 
plans  to  integrate  Imageware's surfacing technologies into SDRC's MDA
software, while   improving  its  stand-alone capabilities.  In  1998, 
the  Company  acquired  software from Altris Software, Inc. for the
creation  of  document  management  functionality  within  SDRC's  PDM 
software  tools.  Also in 1998, the Company established a relationship 
with  Engineering   Animation,  Inc.  to  create   a   virtual   product 
development manager ("VPDM") for customer release in 1999.

Products & Services

      I-DEAS Product Suite

     The  Company's MDA software is registered under the trade name    
I-DEAS  Master Series (TM) and is utilized by many high profile, global 
companies.   I-DEAS  Master  Series  is  an  integrated   software 
solution  which  allows developers to design, simulate,  test  and 
manufacture  product concepts faster than the time required  using 
stand-alone  or partially integrated software tools.   The  I-DEAS 
software  is specifically designed to meet the needs of developers  who  
design   products   by  using  solid  modeling   technology.  Developers
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 Master Series allows product  development team
members to work concurrently on the same  project  sharing  this  common 
master model.   The  master  model  can  be  accessed  and  understood  by
representatives  from  a  customer's  management,  marketing and
manufacturing functions.  Using  I-DEAS  Master  Series, the master model
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  evaluate manufacturability.

         The  I-DEAS Artisan Series (TM) was specifically created to
address the  growing  mid-price CAD market.   It is also  based  on  solid
modeling  technology  of I-DEAS Master Series.   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 and markets Metaphase (TM) Enterprise(R)  a 
PDM  software,  which helps create, manage and control data  associated 
with  product  information as it evolves through the product  life  cycle. 
Metaphase Enterprise software helps customers improve  the  way  they
organize, share and access their product data.   Product developers  can 
achieve fast, reliable access to the  application used  to  create 
product  designs. Managers  can  accurately  and reliably  access
information about work-in-process,  as  well  as, documentation  of  the
entire product life  cycle.  Metaphase  Enterprise  is  a  web  enabled,
modular PDM  system  designed  to  provide  the depth and breadth of
functionality customers  require to  meet  current  and  future  data
management  needs.  Metaphase Enterprise  is  compatible  with
client/server  environments  with distributed design and engineering
departments.

          Imageware Product Suite

         Through its Imageware division, SDRC develops and markets  a
suite of surfacing and design inspection software tools.  Surfacer (TM) is
an advanced, three-dimensional, surface modeling software which assists 
developers in improving the surface quality  of  products under design. 
Surfacer reduces model development time by creating geometric dimensions
and performing analysis from physical  parts, without computerized
descriptions.


          Services

          The  Company  provides customers with process  automation  and
implementation  services, as well as, technical  software  support and
training for the software tools it markets.  The Company has a worldwide
professional services staff with extensive knowledge  of MDA   technology, 
engineering   applications   and   development  processes.   By 
incorporating industry-specific,  best  practices utilizing SDRC software
tools, the Company's service professionals assist  customers in optimizing
their product development  process  and   improving  their  product 
design.   In  addition,  advanced training  and  knowledge transfer can be
provided to customers  to  enable  them to integrate and leverage their
MDA and PDM  software investment.  Advanced  computer simulation  methods 
and  in-depth application  expertise  are available for  traditional  or 
highly specialized   computer  technologies,  including  design   audits,
product design, troubleshooting and engineering process design.

          Technical  application engineers provide  telephone  "hotline" 
support   and   on-site  customer  support  to   customers   under
maintenance  contracts. Customers under maintenance contract  also receive
software enhancement versions released during the term  of  their
contract.

          The  Company  provides basic training for each major  software 
package.   Further  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 tools are 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.

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 $64,182,000,  $49,415,000  and
$34,018,000 in 1998, 1997, and 1996, respectively.

Sales and Marketing

          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 sell maintenance contract  renewals.  Besides sales account
managers, the Company's sales force includes highly  skilled engineers and
technical support personnel, capable of  addressing the sophisticated
needs of  customers. The  Company  has  a  large,  diverse base of
customers.   The  Company  has  an  established  relationship with a
distributor in Japan, Information  Services   International  -  Dentsu 
Ltd.,  which  accounted   for   approximately  11%,  11%  and  12% of the 
Company's  consolidated  revenues  in 1998, 1997 and 1996, respectively.
Revenues from  the  Ford  Motor  Company represented 13%, 14% and 11% of 
consolidated  revenue in 1998, 1997 and 1996, respectively.

          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  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, or material to operating  trends.

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 
must  continually  enhance  its  existing  software   products  and 
pursue  the development and  introduction  of  new  products.  The 
principal competitive factors for the  enterprise   product   development 
software  and  related  services   market,  include  product 
functionality,  product  integration,  hardware  platform   support,  
ease  of  use,  price,  customer   support,  technical  reputation  and 
size  of  installed  customer   base.  Additionally, the Company's
employees are an important  component  of   the   SDRC's  approach  in 
providing  product   development  solutions  to its customers.  The
Company's success  will  depend  in  part on its ability to attract and
retain a work force  whose   skills are competitively recruited.

            The  Company competes against other MDA products  including
the  CATIA and SolidWorks products marketed by Dassault Systemes, the 
Unigraphs  and  SolidEdge products marketed  by  Unigraphics  Solutions, 
Inc.,  and  the  Pro/ENGINEER  and  CADDS  products  marketed by
Parametric Technology Corporation.  The Company  also competes  against
other PDM products such as, Windchill  marketed by  Parametric Technology
Corporation; MatrixOne and Sherpa Works marketed  by  Inso  Corporation;
I/MAN, marketed  by  Unigraphics  Solutions,  Inc.,  products marketed  by 
SAP  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.

Employees

          As  of  December  31,  1998, the Company had  2,366  full-time
employees,  of whom 644 were engaged in research and  development; 376  in 
sales  and marketing; 440 in technical  support;  456  in services; and
450 in general management and administration.

Other Information

          Segment and geographic information is included on pages 48 to 49 
of  the Company's Annual Report to Shareholders for the  year   ended  
December  31,  1998,  and  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.

<TABLE>
Item 2:   Properties

          The  following  table sets forth certain information,  as 
of December 31, 1998, 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, product
Ohio          (expires             development center, and
               2011)               administration facilities
                                   
Cincinnati,    Lease       93,000  Sales, marketing and services
Ohio          (expires             offices
               2007)
                                   
Dearborn,      Lease       39,000  Product development center,
Michigan      (expires             customer support and training
               2000)               facilities
                                   
Minneapolis,    Lease      37,000  Sales  and  marketing offices 
Minnesota      (expires            and product development center
               2000)
                                   
Minneapolis,    Lease       27,000  Sales and marketing offices and
Minnesota      (expires            product development center
               1999)
                                   
Eugene,        Lease        22,000 Product development center
Oregon        (expires  
               1999)
                                   
San Diego,     Lease        21,000 Sales offices and training
California    (expires             facility
               2004)

Frankfurt,     Lease        19,000 Central Europe sales and
Germany       (expires             customer support office
               1999)

Paris,         Lease        18,000 Southern Europe sales and
France        (expires             customer support office
               2002)
                                   
Tokyo,         Lease        16,000 Customer support and services
Japan         (expires             office
               2003)
                                   
Hitchin,       Lease        15,000 European headquarters facility
England       (expires 
               2017)
                                   
Seattle,       Lease        12,000 Product development center,
Washington    (expires             customer support and training
               2002)               facilities
                                   
Ann Arbor,     Lease        12,000 Product development center
Michigan      (expires  
               1999)
                                   
Seoul,         Lease        12,000 Sales and customer support
South Korea   (expires             office
               1999)
                                   
Troy,          Lease        10,000 Sales office
Michigan      (expires 
               2000)
</TABLE>

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
 
           No  matters  were  submitted to a vote of  security  holders
during the fourth quarter of 1998.

Additional Item: Executive Officers of the Registrant (at March 18, 1999)

Name          Age   Position
                            
William J.     54   Chairman of the Board, President and Chief
Weyand              Executive Officer
                            
Robert M.      54   Executive Vice President and Chief
Nierman             Operating Officer
                            
John A.        40   Vice President, Secretary and General
Mongelluzzo         Counsel
                            
Jeffrey J.     46   Vice President, Chief Financial Officer
Vorholt             and Treasurer
                            
Mark C.        42   Vice President, Products Group
Goldstein
                            
William A.     50   Vice President, Marketing
Carrelli
                            
William A.     40   Vice President, Human Resources
Schwartz

          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.  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.  Mongelluzzo has served as Vice President, Secretary  and
General Counsel since October 1991.  He joined the Company in  May 1986 
as Assistant Counsel and was elected Assistant Secretary  in October 1986
and Secretary in December 1986.

          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 to 1994, and  by  Cincinnati
Bell Information Systems, Inc. as Senior  Vice President  and Director,
1989 to 1991.   Mr. Vorholt is a  licensed Certified Public Accountant and
Attorney-at-Law.

           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. Carrelli was named an executive in February 1999.  He has
served  as Vice President, Marketing since April 1997.  From  1993 to 
April  1997, he served as Director of Major Accounts  for  the Company.

          Mr.  Schwartz  joined  the Company  in  March  1999  as  Vice 
President, Human Resources.  From 1996 to March 1999, he was  Vice
President, Human Resources, Americas Group for SAP Americas,  Inc. where 
he  was  responsible  for  all  human  resource  activities encompassing 
the United States, Canada and Latin  America.   From 1989  to 1996, he was
Director of Human Resources for PECO  Energy Company.

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

          The  Company's common stock trades on the Nasdaq Stock Market
under the symbol SDRC.  Additional information, which appears  on page  51 
of the Company's Annual Report to Shareholders for  the  year   ended 
December  31,  1998,  is  incorporated  herein   by   reference.

Item 6:   Selected Financial Data

          The selected financial data for the five years ended December
31, 1998, which appears on page 22 of the Company's Annual Report to 
Shareholders  for  the  year  ended  December  31,  1998,  is incorporated
herein by reference.

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 23 to 31  of 
the Company's Annual Report to Shareholders for the  year ended December
31, 1998, is incorporated herein by reference.

Item 7A:  Quantitative and Qualitative Disclosures About Market Risk

          Information regarding this item, which appears on pages 28 to 29 
of  the Company's Annual Report to Shareholders for the  year  ended
December 31, 1998, is incorporated herein by reference.

Item 8:   Financial Statements and Supplementary Data

          The Consolidated Financial Statements, Supplementary Data and 
Report of Independent Accountants appearing on pages 32 to 51  of the 
Company's Annual Report to Shareholders for the  year  ended  December 31,
1998, are incorporated herein by reference and filed   as  part  of
Exhibit 13.  (The 1998 Annual Report to Shareholders is  not  to be deemed
filed as part of this Form 10-K 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  herein  by  reference   to   the Company's  definitive Proxy
Statement dated April 1,  1999  which  relates to its May 6, 1999 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  are included in the Annual Report  to  Shareholders for the
year ended December 31, 1998, and incorporated herein  by reference:

Consolidated Statement of Operations - Years ended December 31, 1998, 1997
and 1996.
Consolidated Balance Sheet - December 31, 1998 and 1997.
Consolidated  Statement of Shareholders' Equity - Years  ended
December 31, 1998, 1997 and 1996.
Consolidated Statement of Cash Flows - Years ended December
31, 1998, 1997 and 1996.
Report of Independent Accountants.
Notes to Consolidated Financial Statements.
          
          The above information is filed with this Form 10-K as part of
Exhibit 13.  (The 1998 Annual Report to Shareholders is not to be  deemed 
filed  as  part  of this Form 10-K  except  for  portions   thereof which
are expressly incorporated by reference.)


a.2.  Financial Statement Schedules


          The  following  financial statement  schedule  of  Structural
Dynamics  Research Corporation and subsidiaries is  filed  within this
Form 10-K:

         Schedule
            II          Valuation and qualifying accounts

          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.

           Financial  statements  of Estech Corporation  in  which  the
Company owned an equity interest of 30% as of December 31,  1998, 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 such company is
less than 20% of consolidated  total   assets.

          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.


a.3.  List of Exhibits:

            
      3.01  Amended   Articles   of   Incorporation   of   Registrant;
incorporated  by  reference to the Company's  Registration Statement  No.
33-16541, filed August 17, 1987. Amendments  incorporated by reference to
the Company's Form  10-K  for  the  year  ended  December  31,  1993  and 
the  Company's    definitive Proxy Statement dated March 25, 1997.
            
      3.02  Amended  Code  of Regulations of Registrant;  incorporated  by 
reference to the Company's Registration Statement  No. 33-16541,  filed
August 17, 1987.  Amendments incorporated      by  reference to the
Company's definitive Proxy  Statement dated March 26, 1996.
            
      4     Rights   Agreement;  incorporated  by  reference  to   the
Company's Form 8-K, filed on August 6, 1998.
            
      10.01 Structural  Dynamics  Research  Corporation  Tax  Deferred
Capital   Accumulation  Plan  dated   January   1,   1989; incorporated 
by  reference  to  the  Company's  Form  S-8 registration statement No.
33-22136, filed July 10, 1991.
            
      10.02 Structural  Dynamics  Research Corporation  1991  Employee 
Stock  Option  Plan;  incorporated  by  reference  to  the  Company's 
Form S-8 registration statement  No.  33-41671, filed  July 10, 1991. 
Amendment incorporated by reference to  the Company's Form S-8
registration statement No.  33-72328, filed April 27, 1993.
            
      10.03 Structural  Dynamics Research Corporation  Stock  Purchase
Plan; incorporated by reference to the Company's Form  S-8  registration
statement No. 33-40561, filed May 15, 1991.
            
      10.04 Structural  Dynamics Research Corporation  1994  Long-Term
Stock  Incentive  Plan; incorporated by reference  to  the  Company's 
Form S-8 registration statement  No.  33-58701, filed   April  19,  1995. 
 Amendment  to  the   plan   is  incorporated  by  reference to  the 
Company's  definitive  Proxy Statement dated March 26, 1996.
            
      10.05 Structural  Dynamics Research Corporation 1996  Directors'
Non-Discretionary  Stock Plan; incorporated  by  reference to  the
Company's Form S-8 registration statement No.  33-07365, filed July 1,
1996.
            
      10.06 Acquisition  Agreement; incorporated by reference  to  the
Company's  Form 8-K effective January 22, 1997  pertaining to the
acquisition of Metaphase Technology, Inc.
            
      10.07 Agreement   of   Merger   and  Plan   of   Reorganization;
incorporated  by  reference to  the  Company's  Form  8-K, filed  January
14, 1998, pertaining to the acquisition  of     Lookout  Drafting,  Inc.
and Computer  Aided  Systems  for  Engineering, Inc.
            
      10.08 Incentive Compensation Plan; incorporated by reference  to the 
Company's Form 10-K for the year ended  December  31, 1997.
            
      10.09 Form  of Severance Compensation Agreement contracted  with
each  named  Executive  of  the Company;  incorporated  by     reference 
to the Company's Form 10-K for the  year  ended December 31, 1997.
            
      10.10 Employment  Agreement with William J.  Weyand  dated  June 30, 
1997; incorporated by reference to the Company's Form  10-K for the year
ended December 31, 1997.
            
      10.11 Non-Qualified  Unfunded  Deferred  Compensation  Plan  for
outside   directors   of  Structural   Dynamics   Research    
Corporation;  incorporated by reference to  the  Company's Form 10-K for
the year ended December 31, 1997.
            
   10.12 Structural   Dynamics  Research  Corporation  Supplemental 
Retirement  Plan, effective January 1, 1998;  incorporated by  reference 
to the Company's Form 10-Q for  the  period  ended March 31, 1998.
            
      10.13 Agreement  of Merger and Plan of Reorganization pertaining to 
the acquisition of Imageware Corporation; incorporated by  reference to
the Company's Form 8-K filed December  4, 1998.
            
      11    Statement  regarding  computation of per  share  earnings;
information  regarding computation of per  share  earnings  is  included
on page 40 of the Company's Annual Report  to  Shareholders for the year
ended December 31, 1998.

      13    Annual  Report to Shareholders for the year ended December 31,
1998; portions of which are expressly incorporated  by  reference in this
Form 10-K and filed herewith.
            
      21    Subsidiaries of the Registrant; filed herewith
            
      23    Consent of Independent Accountants; filed herewith
            
      27    Financial Data Schedule; filed electronically
          

b.   Reports on Form 8-K

   The Company filed a Form 8-K on December 4, 1998 to  report its
acquisition of Imageware Corporation.

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

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

d.   Financial Schedules

     The Company hereby files with this Form 10-K, the financial statement
schedule listed in item 14.a.2.
<PAGE>
<PAGE>
                                  SIGNATURES

       Pursuant  to  the requirements of Section  13  or 5(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 22, 1999              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 25, 1999  /s/John E. McDowell March 26, 1999
William J. Weyand       (Date)       John E. McDowell          (Date)
Chairman of the Board,                  Director
President and Chief Executive Officer
(Principal Executive Officer)


/s/Jeffrey J. Vorholt March 22, 1999 /s/James W. Nethercott March 26, 1999
Jeffrey J. Vorholt       (Date)     James W. Nethercott       (Date)
Vice President,                     Director
Chief Financial Officer and Treasurer
(Principal Financial and Accounting Officer)


/s/William P. Conlin  March 30, 1999     /s/Arthur B. Sims March 26, 1999
William P. Conlin      (Date)           Arthur B. Sims      (Date)
Director                                Director

                                /s/Gilbert R. Whitaker, Jr. March 26, 1999
/s/Bannus B. Hudson March 25, 1999    Gilbert R. Whitaker, Jr.   (Date)
Bannus B. Hudson      (Date)          Director
Director                     




<TABLE>

Exhibit 13




SELECTED FINANCIAL DATA
Structural Dynamics Research Corporation
<CAPTION>
                                         Year ended December 31
<S>                            <C>       <C>       <C>       <C>         <C>
(in thousands, except per share   1998     1997      1996      1995        1994
data)
                                                                
Operating data:                                                  
  Total revenue                $403,025  $351,322  $285,256  $224,138    $185,358
  Operating income (loss)      $ 42,435  $ 37,059  $ 44,900  $ 28,355    $ (1,239)
  Net income (loss) excluding                                      
    non-recurring             
    Charges (1)                $ 38,902  $ 50,880  $ 38,148  $ 21,491    $(12,191)
  Net income (loss) before                                        
   cumulative effect
   of accounting change        $ 35,672  $ 30,030  $ 38,148  $ (2,809)   $ (8,295)
  Net income (loss)            $ 35,672  $ 30,030  $ 38,148  $ (2,809)   $(12,191)
                                                                 
Common Share data:                                               
  Basic net income (loss) per
   share                       $    .99  $    .85  $   1.11  $   (.09)   $   (.39)
  Diluted net income (loss) per 
   share                       $    .93  $    .81  $   1.05  $   (.09)   $   (.39)
  Average common and common                                     
   equivalent Shares             38,290    36,947    36,290    32,430      31,352
     
Balance sheet data:                                              
  Net working capital          $108,487  $102,329  $ 68,574  $ 42,412    $ 31,322
  Total assets                 $340,754  $293,196  $239,372  $207,673    $152,192
  Long-term liabilities        $  7,872  $  7,751  $  9,281  $  9,730    $  5,640
  Total shareholders' equity   $215,774  $177,837  $130,547  $ 85,144    $ 76,414
                                                                 
Pro forma data: (2)                                              

   Net income (loss)                     $ 28,096  $ 36,632  $ (4,394)   $(13,307)
   Basic net income (loss) per share     $    .80  $   1.07  $   (.14)   $   (.42)
   Diluted net income (loss) per share   $    .76  $   1.01  $   (.14)   $   (.42)
<PAGE>
<FN>
(1) Non recurring charges were $24,300 in 1995 for a shareholder,
class  action  lawsuit settlement, (See Note 8 to the       consolidated
financial  statements),  $20,850  and  $3,230  in  1997  and  1998,
respectively, for write-offs of purchased in-process  research  and
development.    (See   Note   2  to  the   consolidated   financial 
statements).

(2)   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 a pooling  acquisition  in  December
1997) had been a C corporation.  Beginning in 1998, the income  on 
activity associated with Computer  Aided  Systems  for  Engineering  was 
taxed  at the Company's C corporation  rates  and
included in income tax expense.
</FN>
</TABLE>
<PAGE>
<PAGE>
MANAGEMENT'S  DISCUSSION  AND ANALYSIS  OF  FINANCIAL  CONDITION  AND
RESULTS OF OPERATIONS
Structural Dynamics Research Corporation

(in thousands)

The following discussion and analysis should be read in  conjunction with
Selected Financial Data and the Company's Consolidated Financial
Statements and accompanying notes.  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."

Overview

Structural  Dynamics  Research Corporation is a leading  supplier  of
enterprise  product  development  solutions  through  its  suite   of
mechanical  design  automation  ("MDA")  software  and  product  data
management  ("PDM")  software.   The  Company's  software  tools  and
related  services assist manufacturers worldwide in optimizing  their
product  development cycles by streamlining processes while  managing
product information and reducing cost.  The Company primarily markets its 
MDA  software under the brand name I-DEAS(TM) and its PDM  software under
the brand name Metaphase(TM). The Company derives its revenue from
licensing software, selling maintenance contracts for license upgrade
rights  and  customer  support  services,  and  supplying  fee  based
customer  services, such as training, consulting and  implementation. The 
Company devotes substantial internal resources to developing new
technology  and  expanding  the scope of  its  software  tools.   The
Company  also  collaborates with third party developers to  integrate
specific  functionality  into  its  software,  providing  development
solutions  needed by the Company's customers.  Over  the  past  three
years, the Company acquired four other software development companies to 
complement its ability to develop and market integrated  software tools
for its customers.

Results of Operations

For  1998, the Company's consolidated net revenue increased 15%  over 1997
to $403,025. Revenue growth was led by strong sales of Metaphase licenses, 
software maintenance and services in all major  geographic regions. 
During the year, the Company invested substantial resources in  key 
initiatives to brand its trade names, grow its sales  force, expand  its 
product development staffs and purchase technology.   In 1998  and 1997,
the Company recorded non-recurring charges of  $3,230 and   $20,850  for 
purchased  in-process  research  and  development associated   with  the 
acquisition  of  Imageware  Corporation   and Metaphase  Technologies,
Inc., respectively.  Net  income,  excluding non-recurring  charges, was
$38,902, $50,880 and  $38,148  for  1998, 1997   and   1996, 
respectively.   The  decline  in  the   Company's profitability  margins
in 1998 compared to the  previous  year  is  a result  of  its  investment
initiatives and a  larger  proportion  of revenue  from services, which
are more cost intensive than  sales  of software licenses.

Revenue

The  revenue from software licenses grew 3% in 1998 after growing  12% and 
17%  in 1997 and 1996, respectively.  The smaller growth rate  is due  to 
lower  sales  in  North  America  of  I-DEAS  licenses.   The procurement 
rate  of  new  licenses by a  significant  U.S.  customer leveled  in 
1998  after  major purchases in 1996  and  1997.   I-DEAS license growth
in Europe and Asia Pacific virtually offset declines in North  America.  
Revenues  from the sale of Metaphase  licenses  were strong, growing 27%
in 1998.  The Metaphase growth was driven by large orders from automotive
and aerospace industry leaders. 

Software  maintenance and services revenue was $227,888, $180,595  and
$132,198  in  1998, 1997 and 1996, respectively. Software  maintenance and
service revenue accounted for 57%, 51% and 46% of consolidated net revenue 
in 1998, 1997 and 1996, respectively.  The growth and  larger proportion 
of total revenue reflect the increased number of  software licenses 
installed  worldwide  over  the  last  two  years.   As  the installed 
base  expanded,  contracts  for  maintenance  support   and services
increased. Revenue growth was the strongest in Europe due  to large  
implementation  projects  for  I-DEAS  and  Metaphase  license customers.

Of  consolidated net revenue, North America accounted for 45%, 49% and
48%;  Europe, 34%, 30% and 28%; and Asia Pacific, 21%, 21% and 24%  in
1998,  1997  and  1996, respectively.  The Company  expects  that  the
international  market  will  continue to  account  for  a  significant
portion of total revenue in future periods.  Revenue from the sale  of
Metaphase  licenses,  maintenance and services accounted  for  24%  of
consolidated net revenue in 1998.  In 1999, the Company expects  total
Metaphase  revenue to become a larger percentage of  consolidated  net
revenue.

Cost of Revenue

Cost  of revenue consists principally of the staff and related  costs
associated  with  the  generation and  support  of  software  service
revenue,  amortization of capitalized software  costs,  royalty  fees paid 
to  third parties under licensing agreements and  the  cost  of
distributing  software  products.  The  total  cost  of  revenue  was
$155,936, $120,444 and $80,499 for 1998, 1997 and 1996, respectively.

The  cost of licenses represented 18% of license revenue for 1998 and 15% 
for  1997 and 1996.  The cost increased as a percent of  revenue primarily 
due  to higher fees paid to third party  developers.   The cost of
services and maintenance represented 55%, 53% and 44% of  the associated 
revenue for 1998, 1997 and 1996, respectively.   Relative to  the 
associated sales, cost of maintenance and services increased primarily due
to the hiring, training and integration cost associated with  expanding
the workforce to meet the growing demand for software implementation,
training and customer support.  Europe accounted  for the largest
increase, growing services and customer support headcount approximately 
40% in 1998.  Compared to 1996, the Company  allocated more  fixed 
facility and common overhead expenses  to  the  cost  of services  and 
maintenance in 1998 and 1997 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 $119,204, $105,756 and $109,700 in
1998,  1997  and 1996, respectively.  These amounts represented  30%, 30% 
and  38% of total revenue for 1998, 1997 and 1996, respectively. The 
dollar increase in 1998 selling expenses over 1997 was primarily a  result 
of advertising and an expanded sales force.  During  1998, the  Company 
initiated an advertising campaign to  brand  its  trade names and slogans. 
Additionally, the Company increased the number of its  sales  and  sales 
support personnel by approximately  25%  from September 1997.  The 1996
selling expense as a percentage of  revenue was  comparatively  higher due
to non-recurring  bad  debts,  special commission  programs  and
advertising on a  lower  base  of  revenue. While  the Company expects
selling and marketing expenses to increase in  1999,  the expenses may be
a slightly lower percentage  of  total revenue.


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.  
Research and development expense increased to $64,182  in  1998 from 
$49,415 in 1997 and $34,018 in 1996, representing 16%, 14%  and 12%  of 
total  revenue for 1998, 1997 and 1996,  respectively.   The increases 
were  primarily  due to sequential  increases  in  product development  
staff,   including   the   acquisition   of   Metaphase Technology,  Inc. 
in  1997.  The Company was reimbursed  $2,775  and $7,153  of product
development costs by other companies in  1998  and 1997,  respectively. 
Research and development expenses also excluded capitalized internal
software costs of $13,890, $12,957  and   $9,679 for  1998,  1997 and
1996, 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 18%, 21% and 22% of  gross  research and  development  cost 
in  1998, 1997 and 1996,  respectively.   The relative amounts of
capitalized software development cost vary  among periods  depending  on
the stage of development  being  performed  on future   product  
releases.   The  Company  expects   research   and development costs to
increase in 1999 but remain stable as a  percent of total revenue. 

General and Administrative Expenses

General and administrative expenses consist of costs associated  with the 
executive,  finance,  legal, human resource  and  administrative staffs. 
 General  and administrative expenses were $18,038,  $17,798 and   $16,139 
in 1998, 1997 and 1996, respectively.   The  increases were  primarily a
result of a larger workforce needed to support  the Company's growth. 
General and administrative expenses represent  4%, 5%  and  6%  of total
consolidated revenue for 1998, 1997  and  1996, respectively.    The 
Company  expects  general  and   administrative expenses to increase but
remain stable as a percent of total  revenue in 1999.

Acquisitions and purchased in-process research and development

In  November  1998,  the  Company acquired all  outstanding  stock  of
privately-held  Imageware Corporation ("Imageware") for  approximately
$31,000  in  cash,  which  was paid from the Company's  existing  cash
balances.  Imageware is a developer of free form surface-modeling  and 3D 
inspection  software  tools  for  the  automotive,  aerospace  and
consumer   products  industries.   The  Company  plans  to   integrate
Imageware's   surfacing  technologies  into  I-DEAS  software,   while
improving its stand-alone capabilities and links to other CAD systems. The 
transaction  was  accounted for as a  purchase  and  the  Company recorded 
goodwill of approximately $27,600.  The Company recorded  an in-process 
research and development charge of $3,230  for  incomplete technology 
obtained in the acquisition. The value of  the  incomplete technology was
based on the income approach using projected  net  cash inflows beginning
in late 1999 and discount rates of 17% to 24%.   The incomplete technology
includes a surface-modeling project for possible future  releases. At the
time of acquisition, the technology  had  not reached  technological 
feasibility within  the  Company's  integrated products  and  did not have
an alternative future use.   The  surface-modeling project was estimated
to be approximately 95% complete.  Over the  next  two  years,  the
Company expects to complete  the  surface-modeling  project  and 
integrate Imageware  technology  into  I-DEAS. Completing the
surface-modeling project is estimated to cost $3,000 in 1999.

The  Company and Control Data Systems, Inc. ("CDSI") formed Metaphase
Technology,  Inc. ("MTI") as a joint venture in 1992 to  develop  PDM
software solutions for manufacturing companies.  In January 1997, the
Company  acquired  the remaining stock of MTI 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  acquisition included 
the purchase of incomplete technology that had not  reached technological
feasibility and did not have an alternative future use. Accordingly,  the
Company recorded a one-time charge  of  $20,850  to write  off  in-process
research and development.  The  value  of  the incomplete  technology  was 
based  on  the  income  approach   using projected  net  cash inflows
beginning in 1998 and a  19.5%  discount rate.   The  incomplete
technology included projects for web  access, document  management  and
other functionality  primarily  related  to future  releases of Metaphase,
after Metaphase Enterprise  2.3.   The Company  spent  approximately
$8,000 in 1997 to  complete  these  and other projects for Metaphase 3.0
which was released in January 1998. 

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  were
restated to include the results of CASE.  CASE had been a third party
developer of drafting software for the Company since 1984.

In  June 1996, the Company acquired Camax Manufacturing Technologies, Inc.
("Camax") by issuing 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.


Interest and other income, net

Interest  income  was $7,655, $5,201 and $4,593 for  1998,  1997  and
1996,  respectively, and increased sequentially over the  past  three
years  due  to higher levels of interest bearing cash and  securities held 
by the Company.  Additionally, $670 of interest income received on a
federal income tax refund was recorded in 1998.

In  1998, other income included a net gain of $2,745 from the sale of
certain equipment, customer consulting contracts and customer support
contracts  associated with the Company's test software  business,  to MTS 
Systems  Corporation  ("MTS").  Under the  same  agreement,  the Company 
also sold a perpetual, exclusive license to MTS  for  I-DEAS test 
software  for  $7,000.   MTS  assumed  responsibility  for  the continual 
development  of the test software and  for  servicing  the consulting and
customer support contracts acquired from the  Company. The  Company 
retained the right to sell test software  products  and enhancements as
provided by MTS.  Cash inflow to the Company from the agreement was net of
payments to MTS for pre-billed, customer support contracts for which MTS
assumed responsibility. Also, in 1998,  other income included $2,590
received from insurance settlements related to damages  incurred  by the
Company in 1995 from a  shareholder,  class action lawsuit.

Income Taxes

The  Company  recorded  income tax expense of  $19,551,  $11,509  and
$8,636  in 1998, 1997 and 1996, respectively.  In 1997 and 1996,  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 has not been  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.  In 1998, the
Company's provision for income taxes also included a significant charge
for deferred income tax expense.  While the  Company  is  still in an
alternative minimum tax  position,  its North  American  operations are
now sufficiently profitable  that  it began utilizing a portion of its
deferred tax assets. 

In  recent  years,  a  substantial portion of deferred  tax  benefits
relating to temporary differences was offset by a valuation allowance
because  of doubt regarding the ultimate realization of the benefits. This
caused the effective tax rate to differ from the statutory rate. The 
factors,  which  necessitated the establishment  of  a  complete valuation 
allowance are not expected to be entirely present  in  the future.   The 
Company  has begun a process to reduce  the  valuation allowance during
future years based on current  facts  and  forecasted  circumstances.  
The  Company   will continue to monitor this situation and adjust the
valuation allowance as  appropriate.  As of December 31, 1998, $14,687 of 
the  valuation allowance  of  $27,199 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 and 1996.

Comprehensive Income

Comprehensive income was $37,572, $26,083 and $38,598 in  1998,  1997 and 
1996,  respectively.  The differences  between  net  income  and
comprehensive  income  were primarily due  to  unrealized  gains  and
losses  from the translation of foreign subsidiaries' balance  sheets into 
U.S. dollars.  Net foreign currency translation losses occurred in  1997 
because  the U.S. dollar strengthened against  the  foreign currencies  of 
the subsidiaries.  In 1998, these foreign  currencies gained  relative  to 
the U.S. dollar which resulted  in  translation gains.

Liquidity and Capital Resources

As  of  December  31, 1998, the Company had $122,305  in  cash,  cash
equivalents  and liquid investments.   The Company's  current  assets
totalled  $225,595 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 $80,212  for  1998
compared to $62,981 and $36,593 for 1997 and 1996, respectively.  For
1996,  net operating cash flow, excluding $17,600 paid for the  class
action litigation settlement, was $54,193.  Operating cash flows have
increased due to higher net incomes and in 1998, an improved rate  of
customer  collections  relative to the sales  level.  Operating  cash
flows also vary among years due to normal variations in the timing of
operating disbursements and customer receipts. 

The  Company used $51,831, $55,261 and $34,278 of cash for  investing
activities  in  1998,  1997 and 1996, respectively.   Cash  was  used
primarily   for  business  acquisitions,  software  development   and
equipment  purchases.   The Company paid net  cash  of  approximately
$30,682 and $29,689 in the acquisitions of Imageware and MTI in  1998 and 
1997,  respectively.  The Company used cash of $17,140,  $13,006 and 
$9,825 to construct and acquire software code in 1998, 1997  and 1996,
respectively.  Also, the Company added equipment, exclusive  of
acquisitions, of $12,125, $13,640 and $14,290, respectively in  1998, 1997 
and  1996, primarily for furniture and computers to accommodate the
increase in employee headcount.

Net  cash  used  by  financing activities was  $10,680  in  1998  and
included  $15,954  to  purchase the Company's own  common  stock  and
$1,753  to  retire bank debt acquired from purchased companies.   Net cash
from financing activities was $5,275 and $4,519 during 1997  and 1996, 
respectively, and reflects 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.

In  September 1998, the Company's Board of Directors approved a stock
repurchase  program authorizing the Company to purchase up  to  3,000
shares   of  its  own  stock  in  the  open  market  at  management's
discretion.   Through December 31, 1998, the Company had purchased  a
total  of  925 shares.  The repurchase program is being  funded  from
available  working capital and is intended to offset the issuance  of
shares under the existing employee stock plans.

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
no current  commitments for material capital expenditures.  The  Company
may  use  portions of its cash and investments to acquire  additional
companies  or  technology  that  is  complementary  to  its   product
offerings.  The Company has never paid a cash dividend and intends to
continue its policy of retaining earnings to finance future growth.

Recent Accounting Pronouncements

     Revenue Recognition

In   August   1997,  the  American  Institute  of  Certified   Public
Accountants  ("AICPA")  issued Statement of  Position  ("SOP")  97-2,
"Software  Revenue Recognition," which was effective for transactions
occurring in the Company's fiscal year which began January  1,  1998. In 
March 1998, the AICPA issued SOP 98-4, "Deferral of the effective date  of 
a  provision of SOP 97-2" which allows companies  to  defer adoption of
certain provisions of SOP 97-2 related to vendor-specific objective 
evidence.   In December 1998, the AICPA  issued  SOP  98-9 "Modification 
of  SOP  97-2" to readdress vendor-specific  objective evidence.   The 
Company's  adoption of SOP  97-2  in  1998  and  the issuance  of SOP 98-4
and SOP 98-9 did not have a significant  impact on the Company's financial
condition or results of operations.

     Derivatives and Hedging Activities

In  June  1998,  the  Financial  Accounting  Standards  Board  issued
Statement   of  Financial  Accounting  Standard  ("SFAS")   No.   133
"Accounting for Derivative Instruments and Hedging Activities."  SFAS No.
133 establishes accounting and reporting standards for derivative
instruments,  including forward foreign exchange contracts,  and  for
hedging  activities. The Company  enters into forward foreign exchange
contracts  to hedge certain foreign currency denominated receivables. SFAS 
No. 133 will be effective for the Company's financial reporting beginning 
in  2000 and cannot be applied retroactively to  financial statements  of
prior periods. It will require entities  to  recognize all  derivatives as
either assets or liabilities in the statement  of financial position and
measure those instruments at fair value.   The accounting  for gain and
losses from changes in the fair value  of  a particular  derivative  will 
depend  on  the  intended  use  of  the derivative.   The  Company does
not expect the eventual  adoption  of SFAS  No.  133  to  have  a material
impact on  the  results  of  its operations or financial position.

Market Risk

The  Company  faces  financial risk to changes  in  foreign  currency
exchange  rates  due to foreign denominated balances related  to  its
Asian  and European operations.  Historically, using forward  foreign
exchange   contracts,  the  Company  has  hedged  currency  exposures
associated   with  intercompany  balances  denominated   in   foreign
currencies.  The Company's hedging activity is intended to offset the
effect of currency fluctuations on these balances.  The Company  does not 
engage  in  trading or speculative currency  transactions.   The Company's 
outstanding  forward  foreign  exchange  contracts  mature within  90 
days and did not have a material impact on the  Company's operating
results or financial position.  Movement of exchange  rates is  not
expected to have a material impact on the Company's financial results.

Short-term  forward contracts to sell foreign currencies at  December 31,
1998:

  Forward Contract  U.S.       Contract
                    Dollar     Rate
                               
  French franc      3,500      5.60
  Korean won        1,800  1,225.04
  Japanese yen      1,500    115.00
  German mark       1,500      1.67
  Swedish krona     1,500      8.10
  Italian lira      1,500  1,654.53
  Netherland       
  guilder           1,200      1.88
  Swiss franc       1,100      1.38
  Spanish peseta      600    141.84
  British pound       600       .60

The  Company also faces exposure to changes in interest  rates.   The
Company  has a portfolio of marketable securities consisting of  U.S.
Treasury  and  U.S. Government agency obligations.  These  securities are 
classified as available for sale, and consequently are  recorded at  fair
market value with unrealized gains or losses reported  as  a separate  
component  of  stockholder's  equity.   Given  the   short maturities  and 
investment  grade  quality  of  the  portfolio,  the interest rate
exposure is not considered material.  As a result,  the Company does not
hedge interest rate exposures. 

The  following  table presents expected cash flows from  market  risk
sensitive  financial  instruments over the next  five  years.   These
financial  instruments are denominated in U.S. dollars  and  are  not held
for the purpose of trading.

Interest rate sensitive marketable securities at December 31, 1998:

               Fair            Contractual Maturity
               Value   1999  2000  2001  2002    2003   thereafter
                                                            
 Fixed rate   
 securities   21,724  11,715 9,000                          961 
 Weighted 
  average 
 interest rate          6.26  5.66                         5.58

The carrying amounts reflected in the consolidated balance sheets for
cash,  cash  equivalents  and  accounts receivable  approximate  fair
market  value due to the short maturities of these instruments.   The
values represent estimates of expected possible value and are subject to
potential credit risk.

Factors That May Affect Future Results

The  historical results of operations and financial position  of  the
Company   are   not   necessarily  indicative  of  future   financial
performance.   The  Company's results and forward-looking  statements are 
subject  to certain risks and uncertainties, including  but  not limited
to those discussed below, that could cause future results  to differ
materially from those projected.

     Market Growth

The  Company  derives  most  of its revenues  from  selling  software
products  and  services to the high-end users of the  product  design
markets.   Market growth and the Company's ability to match  resource
levels  with  market  growth rates will directly  impact  its  future
operating  results.  For 1998, actual market growth rates  for  high-end,
MDA license sales within North America deteriorated relative  to beginning 
of the year forecasts.  MDA market growth may have  slowed due  to 
preferences  among  new users for  lower  priced,  mid-range products  and 
strong  capacity within the installed  base  of  seats already  sold.  If
MDA market growth rates continue to  decline,  the Company's license
revenue growth, as well as maintenance and services revenue growth, is
likely to slow as well.

     Resource Management

The  Company  invests  resources  in  product  development,  selling,
marketing and customer service opportunities with the expectation  of
revenue  growth  and  incremental earnings. The  Company's  operating
expense levels are planned, in part, on expected revenue growth,  and the 
expense  levels  are generally committed in advance.  In  recent months, 
the  Company  has  expanded  its  sales  infrastructure  and increased 
the  number of software product developers.  Additionally, certain 
technologies  obtained  in the  Imageware  acquisition  will require 
substantial  investment  to  meet  customer  needs.    Since expenses  are 
relatively fixed in the near  term,  future  operating results will be
impacted by the Company's ability to convert invested outlays into
expected revenue growth at profitable margins. 

     Competition

The  product  development software industry  is  highly  competitive.
Companies  compete based on functionality, integration,  scalability,
customer  support,  market timing, price  and  other  factors.   Some
competitors have focused their efforts to develop software native  to the 
Microsoft  Windows  platform.   While  the  Company's  software products 
are available for a variety of vendor platforms,  including Windows,  they 
currently do not provide user interfaces  or  linking functionality 
native to Windows applications.  Customer  preferences for  the  Company's
products, including platform choices,  cannot  be assured.   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.  Consequently, the Company relies on highly skilled  
technical,   sales  and  other  key   employees   who   are competitively 
recruited within the software industry.  Additionally, the  Company 
relies,  to  a  lesser degree,  on  third  parties for development.  
Failure  to  attract  and  retain  key  personnel  and maintain  important
third party relationships, could have an  adverse impact  on  future
operating results.  Also, the entire industry  may experience  pricing and
margin pressure which could adversely  affect the Company's operating
results.  The Company's success also depends, in  part, on its ability to
protect the intellectual property  rights of its products and brand names.

     Product Distribution

Besides  its  own  sales force, the Company relies  on  distributors,
representatives  and  value-added resellers  to  sell  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 on  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 
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, or material  to operating trends.

     International Business

A significant portion of the Company's revenues is 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.




      Year 2000

The Year 2000 causes uncertainties about whether computer systems and
other  equipment  with  date  sensitive  hardware  or  software  will
appropriately recognize and process dates beyond 1999.   The  failure of 
software programs, computer hardware and equipment in this regard could 
result  in  business interruptions and  adversely  affect  the Company's 
operating  results.  The Company  has  taken  measures  to address its
exposure to these potential date-related failures. 

The  Company's  major  exposures  to  date-related  failures  include
product  liability  for  the software tools which  it  markets.   The
Company's  primary  software offerings,  (I-DEAS  Master  Series  and
Metaphase Enterprise), store dates in a full, four-digit format.  The
Company  has conducted extensive testing of these software offerings,
including  integrated  third  party  functionality,  for  Year   2000
compliance  ("compliance").  Based on testing to date, I-DEAS  Master
Series 5, Metaphase Enterprise 2.3 and their respective subsequent
releases, properly recognize and process  dates beyond  1999 when the
underlying operating system of the host machine provides  full  date
information to the software.   The  Company  has tested,  and  will 
continue to test, its code for new  products  and enhancements  to  ensure 
compliance  in  future  software  releases. Potential causes of failure
will continue to be rectified in a timely manner.  Compliance of product
versions prior to I-DEAS Master Series 5  and Metaphase Enterprise 2.3 is
not completely known; however,  if there  are  issues  of  non-compliance, 
current  customers  of  such products  can  upgrade  to achieve Year 2000
compliance.   While  the software products were developed to be compliant,
customizations  and modifications  to  the  products  are  the 
responsibilities  of  the customer and may not necessarily be compliant. 
To date, the  Company is  not  aware of any customer customizations or
modifications  which result  in  significant date-related failures of
otherwise  compliant software.

The   Company   relies   on  third  parties  for  telecommunications,
electricity,   banking,   shipping  and  other   essential   business
operations.  Additionally, its information systems depend on computer
hardware,  software,  and  other equipment  also  supplied  by  third
parties.   To reduce the uncertainty caused by third party  reliance, and 
mitigate  the  consequences of the Year 2000,  the  Company  has adopted 
a  Year  2000 conversion approach with  five  basic  phases: Awareness, 
Assessment, Renovation, Validation,  and  Implementation. The  approach 
is  being applied throughout the  Company  and  is  in differing  phases 
among areas of exposure.  The Company  is  in  the process of identifying
the critical suppliers of services and systems and assessing which, if
any, areas pose significant risks of business interruption.   So  far,  no 
significant  deficiencies   have   been identified.  The Company's
enterprise management information  system, SAP  R/3,  is Year 2000
compliant based on representations  from  its supplier, SAP AG.

At  this  time,  the  Company expects the  conversion  to  Year  2000
compliance  to  be  completed  in  1999.   The  total  cost  of   any
modifications necessary to achieve compliance is not expected  to  be
material  to operating results.  The Company's policy, in  accordance with 
generally  accepted accounting procedures,  is  to  expense  as incurred 
the  cost  of  maintenance  and  modification  to  existing systems,  and
to capitalize the cost of any new software or  hardware and amortize that
cost over the estimated useful lives of the assets. 

While  the  Company has taken measures to reduce the  risk  of 
date-related  failures,  it  cannot eliminate the potential  for  business
interruption  or  product failure due to third party  non-compliance.
Additionally, Year 2000 interruptions in the Company's customer  base
could  reduce or delay sales. With respect to contingency plans,  the
Company  has not developed contingency plans at this time  to  handle
significant failures.  The Company will address contingency  planning in
1999 for the most likely worst case scenarios. 

     Euro Conversion

On  January  1, 1999, eleven of the fifteen member countries  of  the
European  Union  (the  "participating countries")  established  fixed
conversion  rates  between their existing sovereign  currencies  (the
"legacy  currencies")  and the euro currency, adopting  the  euro  as
their common legal currency on that date.  The legacy currencies  are
scheduled  to  remain legal tender in the participating countries  as
denominations  of  the  euro  until January  1,  2002.   During  this
transition period, public and private parties may pay for  goods  and
services using either the euro or the participating country's  legacy
currency   on  a  "no  compulsion,  no  prohibition"  basis   whereby
recipients must accept euro or the legacy currency as offered by  the
payor.    A  currency  translation  process  known  as  triangulation
dictates  how legacy currencies are converted to the euro  and  other
legacy  currencies.   Beginning January 1,  2002,  the  participating
countries will issue new euro-denominated bills and coins and replace the
legacy currencies as legal tender in cash transactions by July 1, 2002.

Because the Company conducts a significant portion of its business in
Europe,  including subsidiaries in five euro participating countries, its
business and operations will be affected by the euro conversion. 

Management  is  addressing the euro conversion,  but  its  impact  on
future  operating  results  is  uncertain.   Management  expects  the
conversion  to  increase cross-border competition  for  its  products
within  Europe,  to a minor extent, due to easier price  transparency for 
customers.   While management expects the total  unit  price  of product 
and  taxes charged to European customers  to  converge  over time,  the
impact on the total revenues and the mix of revenues among its   European 
subsidiaries  in  the  near   term   is   uncertain. Additionally, 
increased cross-border competition  could  effect  the Company's  labor 
cost  and eventually its  allocation  of  resources within  Europe.   The 
Company  has implemented  an  upgrade  to  its management   information 
system  which  includes  the   ability   to simultaneously  record
transactions in euro, perform  the  prescribed currency conversion
computations and convert legacy currency  amounts to euro.  The impact of
the conversion on the Company's currency risk and  taxable income is not
expected to be significant.  In regard  to contracts  denominated  in 
legacy  currencies,  management  has  not identified  any  third party or
customer contracts whose  performance might  be  considered  unenforceable
due to a currency  substitution. Management  will continue to monitor for
significant contracts  which may be void due to the conversion.

     Stock Market Volatility

The  trading  price of the Company's stock, like other  software  and
technology stocks, is subject to significant volatility.  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.

<PAGE>
<PAGE>                                  
                                  
                        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, PricewaterhouseCoopers 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
<PAGE>

<PAGE>                                  
                                  
                  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, 1998 and 1997, and the  results  of their
operations and their cash flows for each of the three years  in the 
period  ended  December 31, 1998, 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 audits 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/PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
Cincinnati, Ohio
January 25, 1999


<PAGE>
<PAGE>

<TABLE>
CONSOLIDATED STATEMENT OF OPERATIONS
Structural Dynamics Research Corporation
<CAPTION>

                                        Year ended December 31
(in   thousands,  except  per  share    1998      1997       1996
data)
<S>                                    <C>       <C>         <C>
Revenue:                                                     
 Software licenses                     $175,137  $170,727    $153,058
 Software maintenance and services      227,888   180,595     132,198
                                       --------   -------    ---------
   Total revenue                        403,025   351,322     285,256
                                                             
Cost of revenue:                                             
 Software licenses                       30,837    25,518      22,578
 Software maintenance and services      125,099    94,926      57,921
                                       ---------  --------     -------
   Total cost of revenue                155,936   120,444      80,499
                                       ---------  --------     -------
       Gross profit                     247,089   230,878     204,757
                                                             
Operating expenses:                                          
   Selling and marketing                119,204   105,756     109,700
   Research and development              64,182    49,415      34,018
   General and administrative            18,038    17,798      16,139
   Purchased in-process research and             
     development                          3,230    20,850  
                                        -------   -------     --------
     Total operating expenses           204,654   193,819     159,857
                                        -------   -------     --------
Operating income                         42,435    37,059      44,900
                                                             
Interest and other income, net           12,788     4,480       1,884
                                        -------   -------     -------
        Income before income taxes       55,223    41,539      46,784

Income tax expense                       19,551    11,509       8,636
                                        -------   -------      ------
        Net income                     $ 35,672  $ 30,030    $ 38,148
                                        ========  =======      ======
Basic net income per share             $    .99  $    .85    $   1.11
Diluted net income per share           $    .93  $    .81    $   1.05
                                                             
Pro forma net income and per share                           
data:
  Income before income taxes as                 
   reported                                        41,539      46,784
  Pro forma income tax expense                     13,443      10,152
  Pro forma net income                           $ 28,096    $ 36,632
                                                  =======      ======                                                           
  Pro forma basic net income per                             
   share                                         $    .80    $   1.07
  Pro forma diluted net income per               
   share                                         $    .76    $   1.01
                                                             
Average common and common    
 equivalent shares                       38,290    36,947      36,290

See accompanying notes to consolidated financial statements.

</TABLE>

<PAGE>
<PAGE>
<TABLE>
CONSOLIDATED BALANCE SHEET
Structural Dynamics Research Corporation
<CAPTION>
                                           December 31
   
(thousands, except per share data)      1998          1997
<S>                                    <C>         <C>
Assets                                               
Current assets:                                      
 Cash and cash equivalents             $100,581    $  81,056
 Marketable securities                   11,787       13,030
 Trade accounts receivable, net of                   
  allowances       
  of $5,563 and $3,529                   92,169       88,954
 Other accounts receivable                8,956       17,815
 Prepaid expenses and other current                  
   assets                                12,102        9,082
                                        -------      -------
   Total current assets                 225,595      209,937

Marketable securities                     9,937       14,925
Net property and equipment               25,674       24,627
Marketable software costs, net           36,237       31,610
Goodwill and other intangibles           32,886        4,833
Other assets                             10,425        7,264
                                        -------      -------
   Total assets                        $340,754     $293,196
                                        =======      =======
Liabilities and Shareholders' Equity                 
Current liabilities:                                 
 Accounts payable                      $ 14,840       12,230
 Accrued expenses                        21,598       17,327
 Accrued compensation                    27,773       22,263
 Accrued income taxes                     7,242        9,182
 Deferred revenue                        45,655       46,606
                                        -------      -------
   Total current liabilities            117,108      107,608

Other long-term liabilities               7,872        7,751
Shareholders' equity:                                
 Common stock, $.0069 per share                       
  stated value; 100,000 shares 
  authorized; 35,487 and 35,654                            
  shares outstanding, net of
  2,313 and 1,500 shares
  in treasury                               246          248
 Capital in excess of stated value      114,499      114,132
 Retained earnings                      102,807       67,135
 Accumulated other comprehensive                   
  income:
   Foreign currency translation   
    adjustment                           (1,843)      (3,667)
   Unrealized gain (loss) on                     
    marketable securities                    65          (11)
                                        -------       -------
          Total accumulated other 
            comprehensive income         (1,778)      (3,678)
   Total shareholders' equity           215,774      177,837
                                        -------     --------
   Total liabilities and  
     shareholders' equity              $340,754     $293,196
                                        =======      =======

</TABLE>

See accompanying notes to consolidated financial statements.

<PAGE>
<PAGE>

<TABLE>
CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY
Structural Dynamics Research Corporation

                             Common Stock                      Comprehensive Income
                                             Capital in
                                    Stated   excess of      Retained   Accumulated            Total
(in thousands, except     Shares    Value    Stated value   Earnings   other        Total     equity
per share data)            

<S>                      <C>       <C>        <C>           <C>        <C>         <C>        <C>
December 31, 1995        33,084    $  230     $ 73,522      $ 11,573   $  (181)               $85,144

Comprehensive income:                                                     
  Net Income                                                  38,148               $38,148
  Other comprehensive                                                    
    income:
      Foreign currency                              
       translation adjustment                                              298         298
      Unrealized gain                                                    
       on marketable
       securities                                                          152         152 
                                                                                    -------
       Comprehensive                                               
        income                                                                     $38,598     38,598
                                                                                   ========
Transactions involving                                                    
    Employee  stock 
     plans                1,176         8       15,016                                         15,024
Payment of Camax       
 dissenter's rights                             (1,236)                                        (1,236)
                                                                          
Distribution of CASE S
 corporation                                                  (6,983)                          (6,983)
- -------------------------------------------------------------------------------------------------------

December 31, 1996        34,260    $  238     $ 87,302      $ 42,738   $   269               $130,547

Comprehensive income:                                                     
  Net Income                                                  30,030               $30,030
  Other comprehensive                                                    
    income:
     Foreign currency 
      translation adjustment                                            (3,965)     (3,965)
     Unrealized  gain                                                    
      on marketable
      securities                                                            18          18       
                                                                                    -------
      Comprehensive   
       income                                                                      $26,083     26,083
                                                                                   =======
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
Distribution of CASE S       
 corporation                                                  (5,633)                          (5,633)
- ------------------------------------------------------------------------------------------------------
December 31, 1997        35,654     $ 248     $114,132      $ 67,135   $(3,678)              $177,837

Comprehensive income:                                                     
  Net Income                                                  35,672               $35,672
   Other comprehensive                                                    
    income:
      Foreign currency                             
       translation
       adjustment                                                        1,824       1,824
      Unrealized  gain                                                    
       on marketable

       securities                                                           76          76
                                                                                   --------
     Comprehensive   
      income                                                                       $37,572     37,572
                                                                                   ========
Transactions involving                                                    
      Employee stock 
       plans                758         5       16,314                                         16,319
                                                                          
Purchase  of  Treasury 
  Shares                   (925)       (7)     (15,947)                                       (15,954)
- -------------------------------------------------------------------------------------------------------
December 31, 1998        35,487      $246     $114,499      $102,807   $(1,778)              $215,774
=======================================================================================================
</TABLE>

<PAGE>

<TABLE>
CONSOLIDATED STATEMENT OF CASH FLOWS
Structural Dynamics Research Corporation

<CAPTION>         
                                                              Year ended December 31
(in thousands)                                              1998      1997       1996
<S>                                                      <C>         <C>        <C>
Cash flows from operating activities:                         
 Net income                                              $ 35,672    $ 30,030   $ 38,148
 Adjustments to reconcile net income to                       
  net cash provided by operating
  activities:
   Purchased in-process research    
    and development                                         3,230      20,850     
   Amortization of computer software    
     costs                                                 15,973      15,810     11,779
   Depreciation and other amortization                     12,419      11,032      8,136
   Stock contributions to 401(k) plan                       3,120       2,249      1,606

   Deferred taxes                                           2,946        (740)    (2,125)
   Gain on sale of test business                           (2,745)              
   Other                                                     (134)        205        213
 Changes in assets and liabilities,                           
  from operating activities:
   Decrease (increase) in accounts    
    receivable, net                                         6,514     (31,439)    (1,369)
   (Increase) in prepaid expenses                          (2,826)     (1,032)    (1,635)
   (Increase) decrease in other assets                     (1,602)      4,379     (7,261)
   Increase (decrease)  in accounts                         
    payable and accrued expenses                           10,413       2,049    (16,624)
   (Decrease) increase in accrued     
    income taxes                                           (1,940)      1,100      1,686
   (Decrease) increase in deferred revenue                 (1,571)      9,835      1,683
   Increase (decrease) in other long-                       
    term liabilities                                          743      (1,347)     2,356
                                                           -------    --------   --------
      Net cash provided by operating    
       activities                                          80,212      62,981     36,593
Cash flows from investing activities:                         
 Purchases of marketable securities                       (10,802)    (20,079)   (25,612)
 Proceeds from sales of marketable                        
   securities                                              17,109      21,153     16,949
 Additions to property and equipment, net                 (12,125)    (13,640)   (14,290)
 Additions to marketable software costs                   (17,140)    (13,006)    (9,825)
 Acquisition of Imageware Corporation,                        
   net of cash acquired                                   (30,682)            
 Sale of test business, net                                 1,809                
 Acquisition of Metaphase Technology, Inc.                            (29,689)   
 Investment in and advances to joint ventures                                     (1,500)
                                                          --------   ---------   ---------
      Net cash used in investing activities               (51,831)    (55,261)   (34,278)
Cash flows from financing activities:                         
 Purchase of common stock                                 (15,954)             
 Issuance of common stock                                   7,027      11,091     13,418
 Repayment of debt                                         (1,753)       (183)      (680)
 Distributions of CASE S corporation                                   (5,633)    (6,983)
 Payment of Camax dissenter's rights                                              (1,236)
                                                          ---------   ---------   --------
      Net cash (used) provided by                      
        financing activities                              (10,680)      5,275      4,519
Effect of exchange rate changes on cash                     1,824      (3,965)       298
                                                          -------     --------   --------
Increase in cash and cash equivalents                    $ 19,525    $  9,030   $  7,132
                                                         
Cash and cash equivalents:                                    
 Beginning of period                                       81,056      72,026     64,894
                                                         ---------     -------    -------
 End of period                                           $100,581    $ 81,056   $ 72,026
                                                         =========     =======    =======
Cash paid during the year for income taxes               $ 18,659    $ 11,960    $ 10,462
                                                         =========     =======    =======
</TABLE>

See accompanying notes to consolidated financial statements.

<PAGE>
<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")  is   a
leading,   worldwide  supplier  of  software  development  tools   to
manufacturers  for  mechanical design  automation  and  product  data
management.  In conjunction with software tools, the Company provides
training, consulting and customer support services to its customers.

Basis of Consolidation

The  consolidated financial statements include the  accounts  of  the
Company   and   its  wholly  owned  subsidiaries.   All   significant
intercompany  balances  and transactions have  been  eliminated.  The
Company owns a 30% interest in ESTECH, a Japanese joint venture,  and
accounts  for it under the equity method.  The impact of its  results are
not material to the Company's results of operations. 

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 cost and goodwill and the likelihood of realization  of  the
deferred tax assets.

Pro Forma Net Income and Pro Forma Net Income Per Share

In  1997, the Company acquired Computer Aided Systems for Engineering
("CASE") which was an S corporation for income tax reporting purposes
prior  to  the acquisition.  Pro forma net income and pro  forma  net
income  per  share  reflect  the tax expense  that  would  have  been
reported if CASE had been a C corporation.

Comprehensive Income

In  June  1997,  the  Financial Accounting Standards  Board  ("FASB")
issued Statement of Financial Accounting Standards ("SFAS") No.  130,
"Reporting  Comprehensive  Income," which establishes  standards   or
reporting  and display of comprehensive income and its components  in the
consolidated financial statements.  SFAS No. 130 is effective for the 
Company's  reporting periods beginning in 1998 with  comparative amounts
for prior years.  Comprehensive income includes net income as well  as 
other  changes in shareholder equity, except  shareholders' contributions 
into  the Company and distributions  to  shareholders. The  effect  of 
income  taxes on the Company's  other  comprehensive income is not
material.

Revenue Recognition

The  Company's revenue is recognized in accordance with Statement  of
Position  ("SOP") 97-2, "Software Revenue Recognition."  The American
Institute of Certified Public Accountants ("AICPA") issued  SOP  97-2 in 
1997, and it became effective for transactions occurring  in  the
Company's fiscal year beginning January 1, 1998.  In March 1998,  the
AICPA  issued SOP 98-4 "Deferral of the effective date of a provision of 
SOP  97-2"  which allows companies to defer adoption  of  certain
provisions of SOP 97-2 related to vendor-specific objective evidence. In 
December 1998, the AICPA issued SOP 98-9 "Modification of SOP 97-2"  to
readdress vendor-specific objective evidence.  The adoption of SOP  97-2
in 1998 and the issuance of SOP 98-4 and SOP 98-9  did  not have  a 
significant impact on the Company's financial  condition  or results of
operations.

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  by  licensing software  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 passwords for customer access are available, (c) the fee is fixed or
determinable 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.

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 costs and an allocation of royalty fees  payable 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
costs  and  an  allocation of royalty fees payable 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,   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 large  customer  base  in
diversified  industries across different geographic areas.    Revenue from
a U.S. based automotive customer represented 13%, 14% and 11% of
consolidated net revenue in 1998, 1997 and 1996, respectively  and  a
distributor represented 11%, 11% and 12% of consolidated net  revenue in 
1998, 1997 and 1996, 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 Currencies

In   accordance  with  SFAS  52,  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  in  a  separate component of shareholders'  equity. Gain  and 
losses resulting from transactions denominated in foreign, non-functional
currencies are included in other income. 

Foreign Exchange Contracts


The   Company   enters   into  forward  foreign  exchange   contracts
denominated  in foreign currencies to hedge certain foreign  currency
denominated   receivables.   Market  valuation   gains   and   losses
associated with these financial instruments are recorded currently in
other income to offset gains and losses arising from foreign currency
transactions.    The  interest  element  of  the   foreign   currency
instruments is recognized over the life of the contract and  recorded in
other expense.

As  of  December  31,  1998 and 1997, the Company  had  approximately
$14,800  and  $12,251,  respectively,  of  forward  foreign  exchange
contracts outstanding.  The deferred gains and losses resulting  from
these  contracts  were  not material.  Substantially,  all  contracts
mature  within  90 days.  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.

In  June  1998,  FASB issued SFAS No. 133 "Accounting for  Derivative
Instruments  and  Hedging  Activities."   SFAS  No.  133  establishes
accounting   and  reporting  standards  for  derivative  instruments,
including  forward  foreign  exchange  contracts,  and  for   hedging
activities.   SFAS  No.  133  will be  effective  for  the  Company's
financial   reporting  beginning  in  2000  and  cannot  be   applied
retroactively  to  financial statements of  prior  periods.  It  will
require  entities  to recognize all derivatives as either  assets  or
liabilities in the statement of financial position and measure  those
instruments at fair value.  The accounting for gains and losses  from
changes  in the fair value of a particular derivative will depend  on the 
intended use of the derivative.  The Company does not expect the eventual 
adoption of SFAS No. 133 to have a material impact  on  the results of its
operations or financial position. 

Property and Equipment

Property  and equipment are stated at original cost less  accumulated
depreciation.  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.

Marketable Software Costs

The costs related to the internal development or purchase of software to 
be sold, that are incurred after the technological feasibility of the 
product  has  been  demonstrated, are  capitalized  by  product.
Amortization begins at the time of product release and is  calculated on 
a  release-by-release basis.  It 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. 
Beginning  in  1996, the Company began amortizing the software  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.  The  costs of marketable software  are  shown  net  of
accumulated amortization of $63,786 and $47,813 at December 31,  1998 and
1997, respectively.

Goodwill and Other Intangibles

Goodwill   and  other  intangible  assets  associated  with  business
acquisitions are recorded based on estimated fair market  values  and
amortized using the straight-line method over their estimated  useful
lives,  which  are  predominantly  seven  years  from  the  time   of
acquisition.   The cost of goodwill and other intangibles  are  shown net 
of  accumulated amortization of $2,110 and $938 at December  31, 1998 and
1997, respectively.

Income Taxes

In  accordance  with  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.

Earnings Per Share

Basic  earnings per common share is calculated as net income  divided by
the weighted average number of common shares outstanding.  Diluted
earnings  per share is computed using the weighted average number  of
common  shares  outstanding  and dilutive  common  equivalent  shares
outstanding during the period.  Dilutive common equivalent shares are
calculated  using the treasury stock method and consist  of  dilutive
stock option grants.

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

<TABLE>
                                 Income        Shares      Per-Share
                               (Numerator) (Denominator) Amount
<S>                            <C>            <C>         <C>
1998
Basic  net  income  per share  $35,672        36,088      $ .99
Effect of stock options                        2,202          
                               ---------------------
Diluted income per share       $35,672        38,290      $ .93
                                                               
1997                                                           
Basic  net  income  per  
share                          $30,030        35,265      $ .85
Effect of stock options             --         1,682          
                               ----------------------
Diluted  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          
Diluted  net income  per      
share                          $38,148        36,290      $1.05
</TABLE>
Options  to purchase 855 and 1,509 shares of common stock at December 31, 
1998 and 1997 respectively, were not included in the computation of
diluted earnings per share because the options' exercise price was greater
than the average market price of common shares.

Reclassifications

Certain amounts reported in previous years have been reclassified  to
conform to the 1998 presentation.

(2)  Business Acquisitions

Imageware Corporation

In  November  1998,  the  Company acquired  privately-held  Imageware
Corporation ("Imageware") for approximately $31,000 in cash which was paid 
from  the  Company's existing cash balances.   Imageware  is  a developer 
of  free form surface-modeling and 3D inspection  software tools for the
automotive, aerospace and consumer products industries. The  Company 
plans  to integrate Imageware's surfacing  technologies into  I-DEAS 
software, while improving its stand-alone  capabilities and links to other
CAD systems.  The transaction was accounted for as a purchase.  Goodwill,
computer  software to be marketed and certain other intangibles  were
valued  at  approximately $27,600, $3,460 and  $2,025,  respectively. All 
intangibles associated with the acquisition are being  amortized by  the 
straight-line method over their useful lives, which  do  not exceed  seven 
years.  In addition, the Company recorded  a  one-time charge  of  $3,230
to write off in-process research and  development, which   had  not 
reached  technological  feasibility  and   had   no alternative  future 
use.   The Company's consolidated  statement  of operations  includes
results of Imageware since  November  20,  1998. The  historic operating
results of Imageware are not material to  the Company's  consolidated
operations, therefore pro forma  results  are not presented.

Metaphase Technology, Inc.

In  1992,  the  Company  and  Control  Data  Systems,  Inc.  ("CDSI")
established  a  joint  venture company, Metaphase  Technology,  Inc.,
("MTI"),  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 MTI was accounted  for  on the
equity basis.

In  January 1997, the Company acquired the remaining stock of MTI 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 was exercisable for 750 shares  of the
Company's common stock without par value at the exercise price of $28  per 
share and expired on December 31, 1998.  A value of  $3,500 was  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  MTI 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 using  the  straight-line method  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  had  not reached  technological
feasibility and did not  have  an  alternative future use.  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  were  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.



<TABLE>
Revenue and net income of the separate companies for the years before the
acquisition are as follows:
<CAPTION>

                                  1997      1996
<S>                           <C>           <C>
Revenue:                                    
 SDRC                         $351,322      $285,256
 CASE                            8,749         7,674
 Less intercompany sales        (8,749)       (7,674)
                              --------       --------
   Total revenue              $351,322      $285,256
                                            
Net income:                                 
 SDRC                         $ 24,342      $ 33,689
 CASE                            5,688         4,459

                             ---------      ----------
   Net income                $  30,030      $ 38,148
                             ==========      ==========
</TABLE>
Adjustments recorded to adopt the same accounting practices were  not
material to the consolidated financial statements.  Acquisition costs were
not material.

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,  the
Company issued approximately 967 shares of its 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.   Adjustments  recorded  to  adopt  the  same   accounting
practices were not material to the consolidated financial statements.

(3)    Marketable securities




<TABLE>
Marketable securities consist of the following:
<CAPTION>

                                    December 31, 1998
                       Amortized Unrealized Unrealized  Estimated
                         Cost      Gains     Losses     Fair
                                                        Value
<S>                      <C>       <C>      <C>        <C>
Current:                                                     
 Available-for-sale      $11,009   $ 55                $11,064
 Held to maturity            723                           723
                         --------------------------------------
                         $11,732   $ 55                $11,787
Non Current:                                                 
 Available-for-sale      $ 9,935   $ 48     $(46)      $ 9,937
                         ======================================
</TABLE>


<TABLE>

                                  December 31, 1997
                      Amortized Unrealized  Unrealized   Estimated
                        Cost      Gains     Losses       Fair
                                                         Value
<S>                   <C>         <C>        <C>         <C>
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

</TABLE>
Non current, available-for-sale marketable securities at December 31,
1998,  have maturities of $9,000 in 2000 and $961 in 2013.   Realized
gains   and  losses  on  the  sale  of  marketable  securities   were
immaterial.

(4)   Property and Equipment

Property and equipment, recorded at cost,        December 31
consists of the following:
                                               1998        1997
Property and equipment, at cost:                            
 Computer and other equipment              $ 63,943     $ 57,364
 Office furniture and equipment              18,929       16,983
 Leasehold improvements                       7,819        6,685
                                             ------       ------
                                             90,691       81,032
Less accumulated depreciation and       
amortization                                (65,017)     (56,405)
                                            --------     --------
   Net property and equipment              $ 25,674     $ 24,627
                                            ========     ========

Future  minimum  lease payments under noncancelable operating  leases for 
the  five  years  ending December 31, 2003 approximate  $20,403, $13,237, 
$9,697,  $7,578  and  $5,994,  respectively,  and   $38,021 thereafter.  
Total rental expenses under operating  leases  for  the years  ended 
December 31, 1998, 1997 and 1996 were $22,681,  $19,604 and $16,426,
respectively.

(5)  Income Taxes
<TABLE>
Pre-tax accounting income consists of the 
following:                        
<CAPTION>
                                       Year ended December 31
                                      1998       1997       1996
<S>                                <C>         <C>        <C>
 Domestic                          $38,506     $25,741    $32,236
 Foreign                            16,717      15,798     14,548
                                   -------      -------    ------
                                   $55,223     $41,539    $46,784
                                   =======      =======    ======
</TABLE>

<TABLE>
The provision for income taxes consists 
of the following: 
<CAPTION>
                                      Year ended December 31
                                   1998       1997        1996
<S>                              <C>        <C>        <C>
Federal:                                                          
 Current                         $  109     $ 740      $ 1,234
 Deferred                         2,946      (740)      (2,125)
                                  -----      -----     --------
                                  3,055                   (891)
State:                            2,250     1,200        1,418
Foreign:                                                            
Income taxes                      7,449     5,520        3,125
 Withholding taxes                6,797     4,789        4,984
                                 ------    -------      ------
  Actual income tax expense     $19,551   $11,509      $ 8,636
                                 ======    =======      ======

Deferred state and foreign taxes are not material.


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:
<PAGE>

</TABLE>
<TABLE>
                                                            Year ended December 31
                                                       1998         1997       1996
<S>                                                  <C>           <C>        <C>
Computed expected income tax expense                 $19,328       $14,539    $16,374
Increase (reduction) resulting from:                              
 State taxes, net of federal benefit                   1,463           780        922
 Foreign income taxed at other than the
  U.S. statutory rate                                    878             9     (1,966)
 Purchased in-process research and 
  development                                          1,130         7,297      
 Research and experimentation credit                  (1,400)              
 IRS audit settlement                                 (1,751)
 Release of valuation allowance                       (1,059)
 Utilization of U.S. tax carryforwards                              (9,721)    (4,806)
 S corporation benefit                                              (1,934)    (1,516)
 Change in net deferred taxes                                         (828)    (2,125)
 Alternative minimum taxes                                             740      1,125
 Other                                                   962           627        628
                                                     ---------    ---------   --------
 Actual Income tax expense                           $19,551       $11,509    $ 8,636
                                                     =========    =========   ========
</TABLE>

<PAGE>
<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
                                              1998       1997
<S>                                         <C>      <C>
Deferred tax assets:                                          
 Computer software construction costs and                     
   capitalized Research expenses, net 
   of amortization                          $ 11,656 $ 15,624
 Tax credit and net operating loss               
   carryforwards                              10,136    9,291
 Other liabilities and reserves                5,321    4,526
 Revenue recognition and accounts receivable   3,334    2,753
 Property and equipment                        2,474    1,663
 Other                                           296      608
                                            ------------------
 Total deferred tax assets                    33,217   34,465
 Valuation allowance                         (27,199) (31,538)
                                            ------------------
  Net deferred tax assets                      6,018    2,927
Deferred tax liabilities:                                     
 Purchase accounting intangibles              (1,890)     
                                            -------------------
       Total net deferred taxes             $  4,128 $  2,927
                                            ===================
</TABLE>
Of  the $10,136 in tax carryforwards available at December 31,  1998, none 
expire  before 2003. Alternative minimum tax  carryforwards  of $3,835
never expire.

The net change in the valuation allowance for deferred tax assets was a 
decrease of $4,339 and $3,294 in 1998 and 1997, respectively.   Of the 
$27,199 in valuation allowance at December 31, 1998, $14,687  is
attributable  to  the  tax benefit of stock option  exercises.   Such
benefits  will  be credited to capital in excess of stated  value  if
realized.

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 $18,327 and $17,111 at December 31,
1998 and 1997, respectively.

(6)  Shareholders' Rights Plan

In August 1998, 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.   This  plan replaced  a plan
which had been adopted in 1988 and expired in  1998. 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, 2008,
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 reserved 5,300
shares  of  previously unissued common stock.   There  are  8  shares
remaining  available  to  grant  under  this  Plan.   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.  Only stock options  have  been granted  under
the 1994 plan.  In 1996, the shareholders  approved  a Director's
Non-Discretionary Stock Option Plan allowing for grants to outside 
directors  at the fair market value at the  date  of  grant. Under  this 
1996  plan,  the Company had reserved  1,000  shares  of previously
unissued common stock and 880 remain available for grant.

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.

In  September 1998, the Company's Board of Directors approved a stock
option   exchange   program  allowing  employees  to   exchange   any
outstanding options granted after January 1, 1996 for new options  at the 
market  price of $11.06.  The new options vest over three  years and 
expire  in  ten  years from September  25,  1998.   The  Company cancelled
and reissued 3,658 options under this exchange program.



<PAGE>
<TABLE>

The  following  table reflects option activity 
over  the  last  three years.

<CAPTION>
                             December 31, 1998          December 31, 1997           December 31, 1996
                                         Weighted                 Weighted                      Weighted
                             Stock       Average      Stock       Average           Stock        Average
                             Options Exercise Price   Options  Exercise Price      Options  Exercise Price
<S>                          <C>        <C>             <C>         <C>              <C>        <C>
Outstanding at                                                 
beginning of the year         5,797     19.54           4,945       $17.10            5,008     $12.09
   Granted                    5,263     14.11           2,190       $22.33            1,337     $30.09
   Exercised                   (567)    11.87            (931)      $11.74           (1,169)    $11.11
   Cancelled                 (4,044)    23.71            (407)      $22.81             (231)    $13.93
                             --------------------------------------------------------------------------
Outstanding at                                                 
end of the year               6,449     13.18           5,797       $19.54            4,945     $17.10
                             ==========================================================================
Options exercisable  
  at end of the year          2,374     15.05           2,891       $15.89            2,935     $13.71
                             ===========================================================================

</TABLE>
<PAGE>
<PAGE>
<TABLE>

(7)  Common Stock and Employee Benefit Plans

Information regarding options outstanding as of 
December 31, 1998  is as follows:

<CAPTION>

                                               Options Outstanding               Options Exercisable
                                          Weighted                             
                                          Average            Weighted                              Weighted
                              Number      Remaining          Average               Number          Average
Range of Exercise Prices      Outstanding Contractual Life   Exercise Price        Exercisable     Exercise Price
<S>                          <C>             <C>              <C>                  <C>               <C>
   $ 4.56 - $10.56             650           3.72              6.94                  632              6.88
   $10.88 - $11.06           3,662           9.70             11.06                   18             10.99
   $11.12 - $15.50             762           4.55             13.26                  730             13.24
   $15.53 - $20.13             807           4.45             18.02                  623             18.19
   $20.46 - $24                218           3.52             21.85                  121             21.60
   $24.18                        4           8.64             24.19                    1             24.19
   $25.06                        6           7.06             25.06                    4             25.06
   $26.19                       60           4.35             26.19                   30             26.19
   $28.75                       15           3.04             28.75                   15             28.75
   $31.25                      265           1.84             31.25                  200             31.25
   ---------------------------------------------------------------------------------------------------------
   $ 4.56 - $31.25           6,449           7.23             13.18                2,374             15.05
   =========================================================================================================
/TABLE
<PAGE>

Stock Purchase Plan

Under  the  Stock  Purchase Plan, all U.S.  full-time  employees  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 U.S. 401(k)  plan  and  other defined
contribution plans were approximately $5,427, $3,967,  $3,225 in 1998,
1997 and 1996, respectively.

Employees of U.S. divisions of the Company 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.

Stock-Based Compensation

The  Company accounts for stock options in accordance with Accounting
Principles  Board  opinion 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 since January 1, 1995, and  allocated over  the  options'
vesting period consistent with the provisions  of SFAS  No.  123, the
Company's net income and income per  share  would have been reduced to the
pro forma amounts as follows:


<TABLE>

                                    Year ended December 31
                                  1998        1997         1996
<S>                             <C>          <C>         <C>
Net income - as reported        $35,672      $30,030     $ 38,148
Net income - pro forma           26,268       19,758       32,727
Diluted income per share - as  
reported                        $   .93      $   .81     $   1.05
Diluted income per share - pro     
forma                           $   .69      $   .53     $    .90

</TABLE>
The pro forma effect on the Company's net income and income per share for
1998, 1997 and 1996 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 60% for 1998, 57% for  1997 and  63% for
1996; and risk-free interest rate of 4.7% for 1998, 5.7% for  1997  and 
5.6% for 1996.  The weighted average  fair  value  of options  granted 
was $6.26, $10.07 and $13.76, for  1998,  1997  and 1996, respectively.

(8)   Contingencies and Litigation

The  Company  is currently not a party to any litigation  other  than
ordinary routine litigation incidental to its business.

The  Company  was a defendant in a shareholder, class action  lawsuit
which  originated in 1994 and alleged violations of  certain  federal
securities  laws.   In  December 1995, the  parties  to  this  matter
entered into a memorandum of understanding for settlement, which  was
subsequently  approved by the Court.  Pursuant to the  memorandum,  a
settlement fund of $37,500 was established, consisting of $17,600  of cash 
provided  by  the Company, $10,000 in shares of  the  Company's common 
stock,  and $9,900 of cash provided by the  Company's  former accountants. 
The Company's contribution to the settlement fund,  and other  litigation 
cost,  net of estimated  insurance  proceeds  were recorded  as an expense
in 1995.  The Company contributed $17,600  of cash  and $10,000 of common
stock to the settlement fund in 1996  and 1997 respectively, to finalize
its obligation to the settlement fund.


(9)  Interest and Other Income, Net

Interest and other income, net consists of:


<TABLE>

                                     Year ended December 31
                                   1998        1997      1996
<S>                               <C>          <C>      <C>
Interest income                   $  7,655     $5,201   $4,593
Gain on sale of test software    
business                             2,745                    
Insurance and litigation         
 settlements                         2,590                (950)
Equity in earnings (losses) of   
 affiliates                            211        (39)    (230)
Acquisition expense                                     (1,102)
Other                                 (413)      (682)    (427)
                                  -----------------------------
 Interest and other income, net    $12,788     $4,480   $1,884
                                  =============================

(10)  Product and Geographic Information

In  June  1997,  the  FASB  issued SFAS No.  131,  "Disclosure  about
Segments  of  an  Enterprise  and Related  Information," which  sets
standards  for disclosing information about the operating results  of
internal  segments.  SFAS No. 131 establishes requirements to  report
selected  segment  information quarterly,  and  to  report  annually,
entity-wide disclosures about products and services, major  customers and
the material countries in which the Company operates.

The Company measures operating results as a single reportable segment
which provides multiple products and services for customers to manage
product development processes.  The Company classifies revenue in the
geography of the customer at the time of sale.  However, the customer has 
the  right  to redeploy licenses anywhere in the  world.   As  a result, 
revenue comparisons by geography and among  years,  may  not necessarily
represent where licenses are used.


</TABLE>
<TABLE>
Revenue by products and services are as follows for each year ended
December 31,
<CAPTION>
                               1998         1997         1996
<S>                       <C>           <C>          <C>
Software licenses                                       
 I-DEAS                   $135,362      $139,332     $135,822
 Metaphase                  39,775        31,395       17,236
                           ------------------------------------
  Total software licenses  175,137       170,727      153,058
Software maintenance and                                
services

 I-DEAS                    171,377       138,363      111,170
 Metaphase                  56,511        42,232       21,028
                           ------------------------------------
  Total software                                
   maintenance and             
   services                227,888       180,595      132,198
                           ------------------------------------
  Consolidated net   
   revenue                $403,025      $351,322     $285,256
                           =====================================


</TABLE>
<TABLE>
Revenues by geographic area are as follows:
<CAPTION>
                                   Year ended December 31
                                1998         1997         1996
<S>                          <C>           <C>          <C> 
United States                $176,169      $171,003     $136,532
Europe                        138,091       107,153       80,275
Asia-Pacific                   85,955        73,166       68,449
Other                           2,810                  
                              ----------------------------------
 Consolidated net revenue    $403,025      $351,322     $285,256
                             ===================================
</TABLE>
<TABLE>
Long lived assets by geographic area are as follows:
<CAPTION>
                                         December 31
                                1998         1997        1996
<S>                            <C>         <C>          <C>
United States                  $85,758     $55,160      $51,883
Europe                           6,244       5,627        4,790
Asia-Pacific                     3,595         652          295
Other                            1,817                 
                               ---------------------------------
      Consolidated             $97,414     $61,439      $56,968
                               =================================
</TABLE>

(11) Quarterly Results of Operations (Unaudited)

The following table sets forth selected unaudited quarterly financial
information  for  1998  and  1997.  The  Company  believes  that  all
necessary  adjustments  have  been included  to  present  fairly  the
selected quarterly information.

<PAGE>

<TABLE>
                                  Three months ended                           Year ended
                         March 31,   June 30,   September 30,  December 31,    December 31,
1998                        1998        1998        1998            1998           1998
<S>                      <C>         <C>         <C>             <C>             <C>
Revenue                  $91,112     $95,142     $101,819        $114,952        $403,025
Gross profit              56,625      56,199       61,206          73,059         247,089
Net income                10,328       5,113       10,338           9,893          35,672
Basic earnings per share     .29         .14          .29             .27             .99*
Dilutive earnings per share  .28         .14          .28             .26             .93*

                                   Three months ended                           Year ended
                          March 31,  June 30,   September 30,  December 31,     December 31,
1997                        1997       1997        1997            1997            1997
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*

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

<PAGE>

(12)   Common Stock Information (Unaudited)

The Company paid no dividends in 1998 or 1997 and intends to continue its
policy of retaining earnings to finance future growth. There were
approximately 1,875 shareholders of record as of December  31,  1998. The 
Company's common stock is listed and traded on The Nasdaq  Stock Market 
("Nasdaq").  The high and low trade prices per share for  the Company's
common stock as reported on the Nasdaq are contained in the table below. 
Prices reflect inter-dealer prices without retail mark-up, mark-down or
commission.
<TABLE>

                         Three months ended
          March 31,    June 30,    September 30,   December 31,
            1998        1998          1998             1998
<S>      <C>              <C>         <C>            <C>
High     28 15/16         29          23 7/8         19 7/8
Low      20 1/2           21           8 3/4          7 1/2

                        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      29 1/8           18 7/16     23 3/4         15 1/4

</TABLE>


                                   

 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 Espana, S.A.                            Spain
SDRC Japan K.K.                              Japan
SDRC Software and Services, GmbH             Germany
SDRC India Private Limited                   India
Imageware Corporation                        Michigan
Imageware U.K. Limited                       United Kingdom
Imageware GmbH                               Germany
Imageware France S.A.                        France


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


</TEXT



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 25, 1999
appearing  on  page 32 of the 1998 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/PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
Cincinnati, Ohio
March 26, 1999
                                   
<PAGE>
<PAGE>                                   
                                   
                                   
                                   
                   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 25, 1999 appearing on page 32 of the 1998  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/PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
Cincinnati, Ohio
January 25, 1999


Schedule II

<TABLE>

       STRUCTURAL DYNAMICS RESEARCH CORPORATION AND SUBSIDIARIES
                   VALUATION AND QUALIFYING ACCOUNTS
             YEARS ENDED DECEMBER 31, 1998, 1997, AND 1996

                            (in thousands)
<CAPTION>


                      Balance at    Additions                Balance
                      Beginning of  Charged to  Deductions/  at End
     Description      of Period     Expense    (Recoveries) of Period
<S>                    <C>           <C>           <C>       <C>
Accounts Receivable:                                      
                                                          
Year ended  
December 31, 1996      $2,520        2,689         1,928     $3,281
                       ======       ======        ======     =======
Year ended  
December 31, 1997      $3,281        1,005           757     $3,529      
                       ======       ======        ======     =======
Year ended      
December 31, 1998      $3,529        4,496         2,462     $5,563      
                       ======       ======        ======     =======
</TABLE>


<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                         100,581
<SECURITIES>                                    21,724
<RECEIVABLES>                                  101,125
<ALLOWANCES>                                   (5,563)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               225,595
<PP&E>                                          90,691
<DEPRECIATION>                                  65,017
<TOTAL-ASSETS>                                 340,754
<CURRENT-LIABILITIES>                          117,108
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           246
<OTHER-SE>                                     215,528
<TOTAL-LIABILITY-AND-EQUITY>                   340,754
<SALES>                                        403,025
<TOTAL-REVENUES>                               403,025
<CGS>                                          155,936
<TOTAL-COSTS>                                  204,654
<OTHER-EXPENSES>                              (12,788)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 55,223
<INCOME-TAX>                                    19,551
<INCOME-CONTINUING>                             35,672
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    35,672
<EPS-PRIMARY>                                      .99
<EPS-DILUTED>                                      .93
        

</TABLE>


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