DATASTREAM SYSTEMS INC
8-K, 1997-01-10
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                SECURITIES AND EXCHANGE COMMISSION
                      Washington, D.C. 20549

                           -------------

                             FORM 8-K

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



Date of Report (Date of earliest event reported):  December 31, 1996


                     Datastream Systems, Inc.
      (Exact name of registrant as specified in its charter)



        Delaware                       0-25590                       57-0813674
(State or other jurisdiction     (Commission File Number)       (IRS Employer
     of incorporation)                                       Identification No.)



50 Datastream Plaza, Greenville, S.C.                                29605
(Address of principal executive offices)       (Zip Code)



Registrant's telephone number, including area code:  (864) 422-5001



                                 Not Applicable
   (Former name or former address, if changed since last report)






                                -1-

<PAGE>



Item 2.  Acquisition or Disposition of Assets

      On December 31, 1996, Datastream Systems, Inc. (the "Company") consummated
the  acquisition of all of the capital stock and equity  interests of SQL Group,
B.V., a  corporation  organized and existing  under the laws of The  Netherlands
("SQL").  SQL  was  founded  in  1988,  is a  leading  computerized  maintenance
management  software vendor in Europe and has developed an Oracle-based  client/
server  maintenance  management  system with  cross-platform  capability that is
available in twelve languages. As consideration for the acquisition and pursuant
to the Share Purchase  Agreement  dated as of December 15, 1996 by and among the
Company,  SQL and the stockholders of SQL (the "SQL  Stockholders"),  Datastream
paid the SQL  Stockholders  $17 million in cash and 751,381 shares of the Common
Stock of the Company,  which  consideration  was determined as a result of arm's
length negotiations between the two unaffiliated parties. The Company used funds
from its initial  public  offering in April 1995 and its  secondary  offering in
October 1995 to fund the acquisition.


Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.

      (a)  Financial Statements of Business Acquired.

           As of the  filing  date of this  Current  Report on Form  8-K,  it is
impracticable  for the Company to provide the financial  statements  required by
Item  7(a) of Form  8-K.  In  accordance  with Item  7(a)(4)  of Form 8-K,  such
financial statements shall be filed by amendment to this Form 8-K no later than
60 days after December 31, 1996.

      (b)  Pro Forma Financial Information.

           As of the  filing  date of this  Current  Report on Form  8-K,  it is
impracticable  for the  Company to provide the pro forma  financial  information
required by Item 7(b) of Form 8-K. In accordance with Item 7(a)(4) of Form 8-K,
such pro forma financial  information  shall be filed by amendment to this Form
8-K no later than 60 days after December 31, 1996.

      (c)  Exhibits.

           The  following  exhibits are filed  herewith in  accordance  with the
provisions of Item 601 of Regulation S-K:

Exhibit No. Description of Exhibit

    2.1   Share Purchase Agreement dated as of December 15, 1996 by and among
          Datastream Systems, Inc., SQL Group, B.V. and the stockholders of SQL
          Group, B.V. listed on the signature pages thereto.

    4.1   Escrow Agreement dated as of December 31, 1996 by and among Datastream
          Systems, Inc., the stockholders of SQL Group, B.V. listed on the 
          signature pages thereto and Robert J.J. Lijdsman, as Escrow Agent.

                                -2-

<PAGE>




Exhibit No. Description of Exhibit

    4.2   Registration  Rights  Agreement dated as of December 31, 1996 by and
          among Datastream  Systems,  Inc., the stockholders of SQL Group,  B.V.
          listed on the signature  pages thereto and Residentie  Participaties
          III CV, in its capacity as the SQL Stockholders' Representative.


Item 9.  Sale of Securities Pursuant to Regulation S.

      As a  portion  of the  consideration  for  the  acquisition  of all of the
capital  stock and equity  interests  of SQL, on  December  31, 1996 the Company
issued 751,381 shares of its Common Stock,  $.01 par value per share, to the SQL
Stockholders.  The  shares of Common  Stock  were  issued  without  registration
pursuant to the exemption provided by Rule 903 of Regulation S promulgated under
the Securities Act of 1933, as amended ("Regulation S"). The Company claims this
exemption  from  registration  on the basis that the issuance was made (i) in an
"offshore  transaction" to persons who are not "U.S.  person" as defined in Rule
902 of Regulation S, (ii) the Company and its affiliates and any agent acting on
behalf of the Company or its affiliates did not engage in any "directed  selling
efforts" as defined in Rule 902 of Regulation S, (iii)  "Offering  Restrictions"
as  defined  in  Rule  902 of  Regulation  S  were,  to the  extent  applicable,
implemented by the Company, and (iv) all of the shares of Common Stock issued to
the SQL  Stockholders are subject to the restriction that they may not be traded
for 40 days after the date of  issuance  and bear a legend to such  effect.  The
Company also claims an exemption  from  registration  under  Section 4(2) of the
Securities  Act of 1933,  as amended,  because  the shares of Common  Stock were
issued to a small  number of persons in a  transaction  that did not involve any
public offering.

                                -3-

<PAGE>



                            SIGNATURES



      Pursuant to the  requirements  of the Securities and Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned thereunto duly authorized.



                                    DATASTREAM SYSTEMS, INC.



Date: _______________
                                    Larry G. Blackwell, Ph.D., P.E.
                                    President and Chief Executive Officer













                                -4-

<PAGE>



                            SIGNATURES



      Pursuant to the  requirements  of the Securities and Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned thereunto duly authorized.



                                    DATASTREAM SYSTEMS, INC.



Date: 01/10/97                      /s/ Larry G. Blackwell, Ph.D., P.E.
                                    -----------------------------------
                                    Larry G. Blackwell, Ph.D., P.e.
                                    President and Chief Executive Officer


































                                -4-

<PAGE>


                                  EXHIBIT INDEX


Exhibit No. Description of Exhibit

    2.1   Share Purchase Agreement dated as of December 15, 1996 by and among
          Datastream Systems, Inc., SQL Group, B.V. and the stockholders of SQL
          Group, B.V. listed on the signature pages thereto.

    4.1   Escrow  Agreement  dated as of December  31, 1996 by and among
          Datastream Systems, Inc., the stockholders of SQL Group, B.V. listed
          on the signature pages thereto and Robert J.J.Lijdsman, as Escrow 
          Agent.

    4.2   Registration  Rights  Agreement dated as of December 31, 1996 by and
          among Datastream  Systems,  Inc., the stockholders of SQL Group,  B.V.
          listed on the signature  pages thereto and Residentie  Participaties
          III CV, in its capacity as the SQL Stockholders' Representative.
















                                     -5-

<PAGE>

EXHIBIT 2.1
                                                                  Execution Copy
                          DATED AS OF DECEMBER 15, 1996








                            SHARE PURCHASE AGREEMENT


                                  by and among


                            DATASTREAM SYSTEMS, INC.
                                 ("Datastream"),


                                 SQL GROUP, B.V.
                                    ("SQL"),


                                       and


                       THE STOCKHOLDERS OF SQL GROUP, B.V.
                      LISTED ON THE SIGNATURE PAGES HERETO
                            (the "SQL Stockholders")


<PAGE>





     4


                            SHARE PURCHASE AGREEMENT
                                  BY AND AMONG
                            DATASTREAM SYSTEMS, INC.,
                                 SQL GROUP, B.V.
                                       AND
                       THE STOCKHOLDERS OF SQL GROUP, B.V.
                      LISTED ON THE SIGNATURE PAGES HERETO


                                TABLE OF CONTENTS




ARTICLE I        DEFINITIONS...............................................1
ARTICLE II       SHARE PURCHASE............................................7
ARTICLE III      THE CLOSING...............................................8
ARTICLE IV       REPRESENTATIONS AND WARRANTIES OF  THE SQL
                 STOCKHOLDERS..............................................8
ARTICLE V        REPRESENTATIONS AND WARRANTIES OF DATASTREAM.............19
ARTICLE VI       ADDITIONAL COVENANTS AND AGREEMENTS......................21
ARTICLE VII      CLOSING CONDITIONS.......................................26
ARTICLE VIII     TERMINATION..............................................28
ARTICLE IX       SURVIVAL OF REPRESENTATIONS AND WARRANTIES AND
                 INDEMNIFICATION..........................................29
ARTICLE X        STOCKHOLDERS' REPRESENTATIVE.............................32
ARTICLE XI       GENERAL PROVISIONS.......................................34


                                    EXHIBITS

EXHIBIT A        ESCROW AGREEMENT
EXHIBIT B        NOTARIAL DEED
EXHIBIT C        REGISTRATION RIGHTS AGREEMENT




<PAGE>



                            SHARE PURCHASE AGREEMENT
                                  BY AND AMONG
                            DATASTREAM SYSTEMS, INC.,
                                 SQL GROUP, B.V.
                                       AND
                       THE STOCKHOLDERS OF SQL GROUP, B.V.
                      LISTED ON THE SIGNATURE PAGES HERETO


        THIS SHARE  PURCHASE  AGREEMENT is made and entered into as of this 15th
day of  December,  1996,  by and among  Datastream  Systems,  Inc.,  a  Delaware
corporation  ("Datastream"),  SQL  Group,  B.V.,  a  corporation  organized  and
existing under the law of The Netherlands  ("SQL"),  and the stockholders of SQL
listed on the signature pages hereto (hereinafter referred to individually as an
"SQL Stockholder" and collectively as the "SQL Stockholders").

        The  parties  hereto have agreed  that  Datastream  will  acquire SQL by
purchasing  all of the capital stock of SQL from the SQL  Stockholders  upon the
terms  and  conditions  set  forth  herein  (the  "Transaction").  The  Board of
Directors  of  Datastream  and the  Supervisory  Board of SQL have  approved the
Transaction and this Agreement. The parties hereto desire to make this Agreement
for the purpose of setting forth certain representations,  warranties, covenants
and conditions in connection with the Transaction.

        THEREFORE, in consideration of the mutual  representations,  warranties,
covenants, and conditions contained herein, the parties hereto agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

        The following  capitalized  terms used in this Agreement  shall have the
meanings set forth below:

        1.1 "Affiliate" means, with respect to a specific Person, another Person
that directly or indirectly,  through one or more intermediaries,  controls,  is
controlled by, or is under common control with, the Person specified.

        1.2  "Articles of  Association"  of a  corporation  incorporated  in The
Netherlands  means the Articles of Association of such  corporation,  as amended
through the date hereof.

        1.3 "Business Day" means any day, other than a Saturday, Sunday or legal
holiday  on which  banks  are  permitted  to close in either  Greenville,  South
Carolina or Rotterdam, The Netherlands.

        1.4 "Cash Consideration" means US $17.0 million, the aggregate amount of
cash to be delivered by Datastream at the Effective Time.

        1.5 "Claim" or "Claims" shall mean any demand, claim, action or cause of
action,  assessment,  loss,  damage,  liability,  cost or expense  described  in
Article IX hereof.

        1.6 "Closing" means the closing of the transactions contemplated
by this Agreement.

        1.7  "Closing  Date"  means the date on which the  Effective  Time shall
occur.

        1.8 "Code" means the Internal Revenue Code of 1986, as amended.

        1.9 "Datastream" means Datastream Systems, Inc., a Delaware
corporation.

        1.10"Datastream Common Stock" means the shares of common stock, $.01 par
value per share, of Datastream.

        1.11"DGCL" means the Delaware General Corporation Law.

        1.12"Disclosure   Letter"   means  that   certain   letter  by  the  SQL
Stockholders  to  Datastream  dated as of the date  hereof  that sets forth with
particularity,  by reference to  particular  Sections of this  Agreement,  those
facts and  circumstances,  which if not  disclosed  therein,  would  result in a
breach of the representations  and warranties  contained in Article IV hereof or
of the additional covenants and agreements set forth in Article VI hereof.

        1.13"Effective Time" means the date and time at which the Notarial
Deed is executed.

        1.14"Environmental  Laws"  means  all  laws  relating  to  pollution  or
protection of human health or the environment  (including,  without  limitation,
ambient air, surface water, ground water, land, surface or subsurface strata) or
concerning or relating to emissions, discharges, releases or threatened releases
of  any  Hazardous   Materials,   or  otherwise  relating  to  the  manufacture,
processing,  distribution,  use,  treatment,  storage,  disposal,  transport  or
handling of any Hazardous Materials.

        1.15"Environmental  Permits"  means all  permits,  licenses,  approvals,
consents,  and authorizations  relating to environmental matters or issued under
Environmental Laws.

        1.16"Escrow Agent" means the escrow agent to be named under the
Escrow Agreement.

        1.17"Escrow Agreement" means the Escrow Agreement referred to in Section
9.9 hereof, substantially in the form attached hereto as Exhibit A.

        1.18"Escrow  Shares" means the 150,276 shares of Datastream Common Stock
to be deposited in escrow by the SQL Stockholders (other than Marconi Stichting)
pursuant to the Escrow Agreement in the proportions set forth on Schedule 2.2.

        1.19"Exchange Act" means the Securities Exchange Act of 1934, as
amended.

        1.20"Financial  Statements" means (i) the audited  consolidated  balance
sheet,  statement of operations  and statement of  stockholders'  equity of SQL,
together with related schedules and notes, as of and for the twelve-month period
ended December 31, 1995, and (ii) the Interim Statements.

        1.21"Governmental  Authority"  means any court,  administrative  agency,
commission or other governmental  authority or instrumentality,  local, state or
federal, of any domestic or foreign government.

        1.22"Hazardous  Materials"  means any  hazardous,  toxic,  or  polluting
substances,   materials,  pollutants,   contaminants,   petroleum  or  petroleum
products, gas or gas products or  asbestos-containing  materials (as any of such
terms  may  be  defined  under  any  applicable   laws  or  regulations  of  any
Governmental Authority).

        1.23"Indemnified  Party" shall have the meaning ascribed to such term in
Section 9.4 hereof.

        1.24"Indemnifying Party" shall have the meaning ascribed to such term in
Section 9.4 hereof.

        1.25"Intellectual  Property"  means all  intellectual  property  and the
rights  thereto,  whether  owned  or  used  by SQL or one of its  Affiliates  or
licensed from another party by SQL or one of its  Affiliates,  whether  existing
under the laws of The  Netherlands,  the  United  States of America or any other
jurisdiction, including, without limitation:

            (a)   patents, patent applications, patent rights, patent
disclosures and improvements thereto;

            (b)  trademarks,  trade  names,  trade  designs,  trade dress logos,
service  marks,   corporate  names  and   registrations   and  applications  for
registrations thereof;

            (c)   copyrights, and registrations and applications for
registration thereof;

            (d)   computer software (including without limitation the
source code for any such software), data and documentation;

            (e) trade secrets and confidential business  information,  including
without  limitation,   customer  lists,  ideas,  formulae,  inventions  (whether
patentable  or  not  and  whether  or  not  reduced  to   practice),   know-how,
manufacturing and production processes and techniques,  research and development
information,  drawings,  specifications,  designs, plans,  development and other
tools, proposals, technical data, copyrightable works of authorship,  financial,
marketing  and  business  data,  pricing  and  cost  information,  business  and
marketing plans, proprietary processes, techniques and formulae;

            (f)   other proprietary rights; and

            (g) all documentation and tangible  embodiments thereof (in whatever
form or medium)  constituting,  describing or relating to the above,  including,
without limitation, manuals, memoranda and records.

        1.26"Interim  Statements" means the unaudited consolidated balance sheet
and  statement of operations  of SQL,  together  with any related  schedules and
notes, as of and for the nine-month period ended September 30, 1996.

        1.27"Liability" means any and all liability for damages (as such term is
commonly defined under Dutch law),  provided,  that such term shall also include
attorneys'  fees and  expenses  necessary  to enforce  rights  hereunder if such
rights arise in respect of gross  misrepresentation,  fraud or illegal  business
activities.

        1.28"Lien" means any mortgage,  charge,  pledge,  lien, option, right of
conversion,  right to purchase or other form of security or  encumbrance  of any
kind or nature whatsoever,  on , over or affecting the subject assets,  property
or securities (provided, that such term shall not be deemed to include rights of
first refusal,  preemptive,  preferential  or similar  rights,  including  those
rights commonly known under Dutch corporate law as "blocking rights").

        1.29"Material"  or "material" means any event,  change or effect related
to the condition  (financial or  otherwise),  properties,  assets,  liabilities,
businesses,  operations  or results of operations of an entity that a reasonable
investor  would  deem to be  important  in  deciding  whether  or not to make an
investment in such entity. No particular dollar (or other currency) amount shall
be dispositive of materiality.

        1.30"Material  Adverse  Effect" means a Material  adverse  effect on the
condition (financial or other),  business,  properties,  net worth or results of
operations of a company and its Subsidiaries taken as a whole.

        1.31"Nasdaq/NMS" means the automated quotation system of the
Nasdaq Stock Market, Inc. known as the National Market System, on which
the Datastream Common Stock is listed.

        1.32"Notarial  Deed" means the Notarial Deed of Transfer,  substantially
in the form of Exhibit B hereto,  by which the shares of SQL Capital  Stock will
be  transferred,  free and  clear of any  Liens,  from the SQL  Stockholders  to
Datastream.

        1.33"Optionholders"  shall mean the persons named on Annex 4.6(a) to the
Disclosure  Letter as  holders,  as of the date  hereof,  of options to purchase
depository  receipts  representing shares of SQL Capital Stock at the respective
exercise prices set forth thereon.

        1.34"Person" means a natural person, company, corporation,  partnership,
government, or political subdivision,  agency or instrumentality of any domestic
or foreign government.

        1.35"Products" shall have the meaning set forth in Section 4.20(a)
hereof.

        1.36"Registration   Rights  Agreement"  means  the  Registration  Rights
Agreement,  substantially in the form of Exhibit C hereto,  among Datastream and
the SQL Stockholders.

        1.37"Regulation   S"  means   Regulation  S  and  the  rules  thereunder
promulgated under the Securities Act of 1933, as amended.

        1.38"Regulation S Legend" means the legend to be placed on the shares of
Datastream  Common  Stock  constituting  the Stock  Consideration  that reads as
follows:

            "The  shares  of  Datastream   Common  Stock   represented  by  this
            Certificate  have not been  registered  under the  Securities Act of
            1933,  as  amended  (the  "Securities  Act"),  and have been  issued
            outside the United States in reliance upon  Regulation S promulgated
            under the Securities  Act. Such shares may not be offered or sold in
            the United  States or to U.S.  persons (as defined in  Regulation  S
            promulgated  under the  Securities  Act),  other than  distributors,
            unless the shares are  registered  under the  Securities Act or such
            offer or sale is made in  compliance  with  Regulation  S or another
            exemption from the  registration  requirements of the Securities Act
            is available.

        1.39"SEC" means the Securities and Exchange Commission.

        1.40"SEC  Documents" means  Datastream's  Annual Report on Form 10-K and
Annual Report to  Stockholders  for the fiscal year ended December 31, 1995, all
Quarterly  Reports on Form 10-Q filed with the SEC since  December  31, 1995 and
all  Current  Reports on Form 8-K filed with the SEC since  December  31,  1995,
Datastream's Proxy Statement for the 1995 Annual Meeting of Stockholders and all
other  reports  filed  or  required  to be  filed  by  Datastream  with  the SEC
subsequent to January 1, 1996 and prior to the Effective Time.

        1.41"Securities Act" means the Securities Act of 1933, as amended.

        1.42"Service  Agreements"  means the  respective  Amended  and  Restated
Employment  Agreements to be entered into as of the Closing Date between SQL and
each of Peter A.G.  Huisman and Vincent Mom, which will reflect the  discussions
between the parties prior to the date hereof. Each such Service Agreement shall,
by its terms,  amend and (to the extent set forth therein) supersede any and all
prior employment agreements or compensatory  arrangements by and between SQL (or
any Subsidiary or Affiliate of SQL) and such executive.

        1.43"Severance  and  Non-Compete  Agreement"  means  the  Severance  and
Non-Compete  Agreement,  which will reflect the discussions  between the parties
prior to the date hereof, to be entered into between SQL and Paul de Gruyter.

        1.44"SQL"  means SQL Group,  B.V., a corporation  organized and existing
under the laws of The Netherlands,  together with any predecessor corporation of
SQL, if any.

        1.45"SQL  Capital Stock" means all of the outstanding  shares of capital
stock of SQL, except those shares of common stock held by SQL as treasury shares
as scheduled in Annex 4.6(a) of the Disclosure Letter.

        1.46"SQL Expenses" means all fees and expenses,  incurred by SQL and all
fees and expenses of the SQL Stockholders in connection with the preparation for
and  consummation  of the  transactions  contemplated  by this Agreement and the
other documents or instruments referenced in this Agreement,  including, without
limitation,   all  attorneys',   accountants',   investment  banking  and  other
professional  fees and  expenses  and  brokers'  or finders'  fees and  expenses
(including  those of Alex. Brown & Sons, Inc.) for persons engaged by SQL or the
SQL Stockholders (or claiming to be so engaged),  filing fees, copying expenses,
travel  expenses  (if  any)  and  other   out-of-pocket  costs  related  to  the
Transaction. The term "SQL Expenses" shall exclude (i) the actual and reasonable
attorney's  fees  incurred by SQL in  connection  with the  negotiation  of this
Agreement  on its behalf to the extent of 20% thereof up to a maximum  amount of
NLG 50,000 and (ii) the actual and reasonable fees of Deloitte & Touche incurred
in connection with the review contemplated by Section 6.10.

        1.47"SQL  Stockholders'  Representative" shall have the meaning ascribed
to such term in Section 11.1 hereof.

        1.48"Stock  Consideration"  means 751,381  shares of  Datastream  Common
Stock, the aggregate number of shares of Datastream Common Stock to be delivered
by  Datastream  at the  Effective  Time.  Subject to Section  6.13  hereof,  the
certificates  evidencing the shares of Datastream Common Stock  constituting the
Stock  Consideration  shall bear the  Regulation  S Legend and the  certificates
evidencing the Escrow Shares may also bear a legend  referencing  this Agreement
and the Escrow Agreement.

        1.49"Stock  Price"  means  the  average  of the high and low bid and ask
prices of Datastream  Common Stock on the Nasdaq/NMS (or other  principal  stock
market  on  which  the  Datastream  Common  Stock  is,  as of the  date  of such
determination,  then traded) on any particular date, as such prices are reported
by the Wall Street Journal.

        1.50"Subsidiary,"  with respect to any entity,  means another entity the
majority of the  outstanding  equity  interests  of which are owned by the first
entity, together with any predecessor corporation of such majority-owned entity,
if any.

        1.51"Tax or Taxes"  means,  with  respect to any entity,  all  corporate
("VpB")  income  taxes  (including  any tax on or based upon net  income,  gross
income,  income as specially defined,  earnings,  profits,  or selected items of
income, earnings, or profits) and all sales, use, transfer,  franchise, license,
withholding,  social security and payroll,  employment,  severance,  occupation,
pension  premium,  V.U.T.,  property or  alternative  or add-on  minimum  taxes,
customs  duties,  or other  taxes,  fees,  assessments  or  charges  of any kind
whatsoever,  together with any interest and any penalties,  additions to tax, or
additional amounts imposed by any taxing authority (domestic or foreign) on such
entity, whether disputed or not.

        1.52"Total Consideration" means US $ 34.0 million, the ascribed value of
the Transaction, paid in cash and Datastream Common Stock as set forth herein.

        1.53 "Transaction  Consideration"  means the Cash  Consideration and the
Stock Consideration payable by Datastream. As used herein, the term "Transaction
Consideration"  is expressed on a per share basis;  provided that the payment or
delivery of the Transaction  Consideration shall be in the proportions set forth
on Schedule 2.2.

        1.54 "Transaction Documents" means this Agreement, the Escrow Agreement,
the Notarial Deed, the Registration Rights Agreement, the Service Agreements and
the Severance and Non-Compete Agreement.

                                   ARTICLE II
                                 SHARE PURCHASE

        2.1  Performance  of  Agreement.  Prior to the date hereof,  the parties
hereto shall take all actions necessary in accordance with applicable  corporate
law and their respective  Certificate of Incorporation and Bylaws or Articles of
Association to approve this Agreement and the transactions  contemplated  hereby
and to cause the Transaction to be consummated,  including,  without limitation,
convening meetings of the stockholders of the respective parties to consider and
vote upon the  approval  of the  Transaction  if such  stockholder  approval  is
required (or  obtaining  the written  consent of the  stockholders  in lieu of a
meeting if permitted under applicable law).

        2.2 Sale and Purchase of SQL Capital Stock. Each of the SQL Stockholders
hereby  sells all of the right,  title and  interest  in and to the SQL  Capital
Stock owned by each of them and Datastream  hereby  purchases all of such right,
title and interest in such shares of SQL Capital Stock, subject to the terms and
conditions  hereof.  Each  outstanding  share  of SQL  Capital  Stock  sold  and
purchased shall be transferred to Datastream,  free and clear of any Liens,  and
the Transaction shall be deemed effective, at the Effective Time by execution of
a Notarial  Deed  substantially  in the form of Exhibit B  attached  hereto,  in
consideration   for  Datastream's   payment  and  delivery  of  the  Transaction
Consideration in respect of each such share. At Closing, in exchange for the SQL
Capital Stock  transferred  to Datastream by each SQL  Stockholder,  and for the
options  held by the  Optionholders  transferred  to  Datastream  at  Closing by
Marconi Stichting acting on behalf of the Optionholders,  Datastream shall, with
respect  to each of the SQL  Stockholders  (with  Marconi  Stichting  acting for
itself and also on behalf of the Optionholders), in the proportions set forth on
Schedule  2.2,  (i) deliver  certificates  representing  the number of shares of
Datastream  Common Stock equal to the aggregate  Stock  Consideration  (less the
Escrow Shares) due to the SQL  Stockholders  (with Marconi  Stichting acting for
itself and also on behalf of the Optionholders),  (ii) effect a wire transfer to
an account of the SQL  Stockholders'  Representative  for the benefit of the SQL
Stockholders (with Marconi Stichting acting for itself and also on behalf of the
Optionholders)  in an amount equal to the aggregate  Cash  Consideration  due to
them,  and (iii)  deliver  certificates  representing  the Escrow  Shares to the
Escrow  Agent.  At  Closing,  Datastream  may  deduct  from the  aggregate  Cash
Consideration  due to each  SQL  Stockholder,  such SQL  Stockholder's  pro rata
portion of the  reimbursement  obligation of the SQL  Stockholders  set forth in
Section  6.5  hereof  as agreed on or prior to  Closing.  Schedule  2.2 shall be
delivered to Datastream by the SQL  Stockholders  at Closing and shall  identify
the proportionate  share of the Total Consideration and, for purposes of Article
IX hereof,  the  proportionate  share of the SQL  Stockholders'  indemnification
obligations,  it  being  agreed  that  Marconi  Stichting's  share  of  the  SQL
Stockholders'  indemnification  obligations  shall be  shared  by the  other SQL
Stockholders and that such proportionate shares shall total to 100%.

        2.3 Board Resignations. The SQL Stockholders shall cause all of
the members of the SQL Supervisory Board and its Management Board to
resign, effective as of the Effective Time..

                                   ARTICLE III
                                   THE CLOSING

        3.1  Location,  Time,  Etc. The Closing  shall be held at the offices of
Trenite Van Doorne,  Amsterdam, The Netherlands,  on the Closing Date commencing
at 10:00 a.m.  local time, or at such other time and place as the parties hereto
may agree in writing.  All of the actions and  transactions  necessary to effect
the  Closing,  as  described  in  Article  VII  hereof,  shall be deemed to have
occurred, and all agreements, documents and other instruments shall be deemed to
have been  executed and  delivered,  simultaneously  at the Closing.  No action,
transaction  or  execution  and  delivery  of any  agreement,  document or other
instrument  or payment or issuance of shares  shall be  considered  to have been
made or effected until all the actions shall have been taken at the Closing, and
the Closing shall have been completed.


                                   ARTICLE IV
                        REPRESENTATIONS AND WARRANTIES OF
                              THE SQL STOCKHOLDERS

        Each  of  the  SQL  Stockholders,  severally  and  not  jointly,  hereby
represents and warrants to Datastream as follows:

        4.1  Authorization,  Etc. Such SQL Stockholder has the power,  authority
and capacity to enter into this Agreement and each other Transaction Document to
which it is a party and to carry out the  transactions  contemplated  hereby and
thereby,  and,  assuming due execution  and delivery of this  Agreement and such
other  agreements by the other parties  hereto and thereto,  this  Agreement and
each other  Transaction  Document  constitutes a valid and binding  agreement of
such SQL  Stockholder,  enforceable  against such SQL  Stockholder in accordance
with its terms.  Such SQL  Stockholder  has  irrevocably  waived any  preemptive
rights or other rights of first  refusal  applicable  to the  Transaction  under
Dutch corporate law or SQL's Articles of Association.

        4.2 No Consent Required.  No consent,  approval,  order or authorization
of, or registration,  declaration or filing with any  Governmental  Authority on
the part of such SQL Stockholder is required in connection with its execution or
delivery  of or  performance  under  this  Agreement  or any  other  Transaction
Document or the consummation of the Transaction.

        4.3 Litigation Relating to the Agreement.  Such SQL Stockholder is not a
party to, or subject to any judgement, decree or order entered in any lawsuit or
proceeding brought by any Governmental  Agency or other party seeking to prevent
the  execution  of this  Agreement  or any  other  Transaction  Document  or the
consummation of the Transaction.

        4.4 Other Claims.  Such SQL Stockholder does not have and shall not have
any claim or cause of action  whatsoever  (including,  without  limitation,  any
claim under any employment, management, consulting or service agreement) against
SQL or any of its  Subsidiaries  arising out of or in any way connected with any
occurrence or state of facts in existence prior to the Effective Time.

        4.5 U.S.  Status.  Such SQL  Stockholder is not a "U.S.  person" as such
term  is  defined  in  Section  902  of  Regulation  S.  Such  SQL   Stockholder
acknowledges that he, she or it has received and reviewed copies of Datastream's
SEC  Documents;  provided,  however,  that such  review has been made  solely in
connection  with  such SQL  Stockholder's  evaluation  of the  Transaction,  and
without verifying,  representing or warranting as to the accuracy, or conformity
with the  Exchange  Act or the  rules  and  regulations  promulgated  by the SEC
thereunder, of such documents.

        4.6 Capitalization.

            (a) The  authorized,  issued and  outstanding  common and  preferred
stock of SQL and each of its  Subsidiaries,  including  without  limitation  all
options,  warrants or convertible securities to purchase any such capital stock,
is as set forth in the Disclosure  Letter.  Each SQL Stockholder owns all of the
issued  and  outstanding  shares of SQL  Capital  Stock  (including  all  rights
attached  thereto  or  associated  therewith)  as set  forth  opposite  such SQL
Stockholder's  name in the  Disclosure  Letter and has legal and valid  title to
such shares of SQL Capital Stock,  free and clear of all Liens. At the Effective
Time, (i) no dividends or rights to receive  dividends shall have accrued to the
holders of the  common  stock or the  preferred  stock of SQL that have not been
paid in full by SQL or otherwise extinguished, (ii) no options, warrants, rights
or other forms of securities exercisable for or convertible or exchangeable into
any equity  interests  of SQL shall be  outstanding  and (iii) the shares of SQL
Capital  Stock  transferred  by Notarial Deed pursuant to Article II hereof will
represent all of the issued and outstanding equity capital of SQL (excluding any
shares of common  stock of SQL held by SQL as  treasury  shares)  at such  time.
Except as set forth the Disclosure Letter, none of the securities listed therein
are subject to any Lien.  The  register of  stockholders  of SQL and each of its
Subsidiaries  contains  complete,  true and accurate  records of SQL and each of
such  respective  Subsidiaries  and sets forth such  information  regarding  the
stockholders of such entities as is necessary under applicable law.

            (b) The issued and outstanding  shares of capital stock described in
the Disclosure  Letter have been duly authorized and validly  issued,  are fully
paid (i.e.,  there are no liabilities  associated  with such shares) and, except
for such rights of first refusal, preemptive, preferential or similar rights set
forth the Disclosure  Letter or existing under Dutch law (all of which have been
waived), are not entitled or subject to any preemptive,  preferential or similar
rights.  Except as set forth in the Disclosure Letter, (i) SQL owns, directly or
indirectly through one or more  Subsidiaries,  all of the issued and outstanding
capital stock of each such Subsidiary,  free and clear of any Lien, and (ii) SQL
has no other  Subsidiaries and owns, neither directly nor indirectly through one
or more Subsidiaries,  no other capital stock or equity interests, or securities
exercisable or exchangeable  for or convertible  into capital stock or any other
equity  interest,  in  any  other  corporation,   partnership,   joint  venture,
association, trust or other business organization.

        4.7 Corporate Organization.

            (a) SQL has been duly  incorporated and is validly existing and duly
registered  under the laws of The  Netherlands,  with full  corporate  power and
authority to own,  lease and operate its  properties and to conduct its business
as presently  conducted,  and is operating  in  accordance  with its Articles of
Association.  SQL  is  duly  registered  and  qualified  to  do  business  as  a
corporation under the foreign  corporation law of each  jurisdiction  where such
registration  or  qualification  is  required,  except  where the  failure to so
register  or qualify  would not have a Material  Adverse  Effect on SQL;  and no
proceeding has been instituted in any such  jurisdiction  revoking,  limiting or
curtailing,  or  seeking to  revoke,  limit or  curtail,  such  registration  or
qualification.

            (b) Each Subsidiary of SQL has been duly incorporated and is validly
existing  and  duly   registered   under  the  laws  of  its   jurisdiction   of
incorporation, with full corporate power and authority to own, lease and operate
its properties and to conduct business as presently conducted,  and is operating
in accordance with its Articles of  Association.  Each such Subsidiary of SQL is
duly registered and qualified to do business as a corporation  under the foreign
corporation law of each jurisdiction where such registration or qualification is
required,  except  where the failure to so register or qualify  would not have a
Material  Adverse  Effect on SQL; and no proceeding  has been  instituted in any
such jurisdiction revoking,  limiting or curtailing, or seeking to revoke, limit
or curtail, such registration or qualification.

        4.8 Authority.  SQL has all requisite  corporate  power and authority to
enter into this Agreement and each other Transaction Document and to perform its
obligations   hereunder  and  thereunder  and  to  consummate  the  transactions
contemplated  hereby and thereby.  The execution and delivery of this  Agreement
and each other  Transaction  Document by SQL and the  consummation by SQL of the
transactions  contemplated  hereby and thereby have been duly  authorized by all
necessary  corporate  action on the part of SQL.  This  Agreement and each other
Transaction  Document has been duly executed and delivered by SQL and,  assuming
due  execution and delivery of this  Agreement and such other  agreements by the
other parties  hereto and thereto,  this  Agreement  and each other  Transaction
Document  constitutes  a valid  and  binding  agreement  of SQL  enforceable  in
accordance with its terms.

        4.9  Noncontravention.  The execution,  delivery and performance of this
Agreement  and each other  Transaction  Document to which SQL is a party by SQL,
and the  consummation of the  transactions  contemplated  hereby and thereby and
SQL's compliance with the provisions hereof and thereof will not:

            (a) conflict  with,  result in a violation of, result in a breach of
or cause a default under (with or without notice or lapse of time, or both),  or
give rise to a right of termination,  amendment, cancellation or acceleration of
any obligation contained in, or require the consent or approval of any party to,
or result in the  creation of any Lien upon any of the  properties  or assets of
SQL or any Subsidiary of SQL under any term, condition or provision of, any loan
or  credit  agreement,   note,  bond,  indenture,   lease  or  other  agreement,
instrument,  permit,  concession,  franchise,  license, judgment, order, decree,
statute, law, ordinance,  rule or regulation applicable to SQL or any Subsidiary
of SQL or any of its  properties  or  assets,  other  than any  such  conflicts,
violations,  defaults,  losses or Liens which, individually or in the aggregate,
would not have a Material Adverse Effect on SQL;

            (b)   violate any provision of the Articles of Association of
SQL; or

            (c) require the consent,  approval,  order or  authorization  of, or
registration,  declaration  or filing  with,  any  Governmental  Authority to be
obtained by SQL or any  Subsidiary of SQL in  connection  with the execution and
delivery of this Agreement or any other Transaction Document or the consummation
of the transactions contemplated hereby and thereby.

        4.10Litigation.   There  are  no  legal,   governmental  or  arbitration
proceedings  pending or, to the knowledge of SQL,  threatened against SQL or any
Subsidiary  of SQL,  or to which SQL or any  Subsidiary  of SQL or any  property
owned  or  leased  by SQL or any  Subsidiary  of  SQL  is  subject,  that  would
reasonably be expected to have a Material Adverse Effect on SQL.

        4.11Bankruptcy  or Liquidation  Proceedings.  There are no bankruptcy or
liquidation  proceedings pending against SQL or any Subsidiary of SQL or, to the
knowledge of SQL,  threatened  against SQL or any Subsidiary of SQL. Neither SQL
nor any of its subsidiaries has incurred any Liability as a managing director of
any company  subjected to bankruptcy  proceedings  or engaged in a suspension of
payments.

        4.12Certain Contracts.

            (a) Except as set forth in the  Disclosure  Letter,  neither SQL nor
any of its Subsidiaries is a party to any material written or oral:

            (i) Joint venture contract,  royalty  arrangement or agreement which
has involved or is reasonably  expected to involve a sharing of profits with any
third party;

            (ii) Indenture, mortgage, promissory note, loan agreement, guarantee
or other agreement, arrangement or commitment for the borrowing of money, a line
of credit or a leasing  transaction  of a type  required  to be  capitalized  in
accordance with Dutch accounting standards;

            (iii)   Indenture,   mortgage,   promissory  note,  loan  agreement,
guarantee or other  agreement,  arrangement  or commitment  for the borrowing of
money or line of credit from or to SQL or any of its  Subsidiaries  to which any
SQL Stockholder (or any Affiliate of any SQL Stockholder) is a party;

            (aa) Except as set forth in the Disclosure  Letter,  neither SQL nor
any of its Subsidiaries is a party to any written or oral:

            (i) Lease or other  agreement  under which SQL (or any Subsidiary of
SQL) is lessor  of,  lessee  of,  or holds or  operates  any  items of  tangible
personal  property or real property owned by any third party,  which  individual
item involves  payments by SQL (or any Subsidiary of SQL) in an amount in excess
of $50,000 per annum;

            (ii)   Agreement,   license,   franchise,   permit,   indenture   or
authorization  which  individual item involves payment by SQL (or any subsidiary
of SQL) in an amount in excess of $50,000 per annum;

            (iii)   Agreement,   license,   franchise,   permit,   indenture  or
authorization,  which individual item involves payment to SQL (or any Subsidiary
of SQL) in an amount in excess of $250,000 per annum; or

            (iv)  Agreement  that  restricts SQL (or any Subsidiary of SQL) from
engaging in any aspect of its  business or  competing in any line of business in
any geographic area.

            (b)  Except  as  set  forth  in  Disclosure  Letter,  there  are  no
distribution  contracts  (including,  without  limitation,  all OEM and end-user
contracts)  to which SQL or any of its  Subsidiaries  is a party which grant any
exclusive right of any kind to any party.

            (c)  Except  as set forth in the  Disclosure  Letter,  all  software
development  agreements  under  which SQL or any  Subsidiary  of SQL is or was a
recipient of the software  development  efforts of any third party provide,  for
the assignment to SQL or such Subsidiary of title to any technology, development
work or other products developed by any other party for SQL or any Subsidiary of
SQL.  Except as set forth in such  Disclosure  Letter,  none of such  agreements
permits any other party to retain or own, or grant to any other party, any right
to any  technology,  development  work or other product  developed by such party
thereunder  or owned  by SQL or any  Subsidiary  of SQL or of which  SQL or such
Subsidiary is a recipient.

            (d)  Except  as set  forth  in the  Disclosure  Letter,  SQL has not
granted  any  source  code  licenses  or  established  any  source  code  escrow
arrangements. None of such source code licenses or source code escrow agreements
authorize any party thereto other than SQL or one of its  Subsidiaries to resell
or otherwise  exploit such source code  commercially  or to further develop such
source code in order to resell or otherwise exploit it commercially.

            (e) Neither SQL nor any of its  Subsidiaries  nor, to its knowledge,
any other party is in default  under any  agreement  set forth on any section of
the  Disclosure  Letter  pursuant  to this  Section  4.12,  nor  under any other
agreement  to which SQL or any  Subsidiary  of SQL is a party,  if such  default
would reasonably be expected to have a Material Adverse Effect on SQL.

        4.13Financial  Statements.  The Financial  Statements present fairly the
consolidated  financial  position  and  results  of  operations  of  SQL  at the
respective  dates  or for  the  respective  periods  covered  thereby,  and  the
Financial  Statements have been prepared in accordance  with generally  accepted
Dutch  accounting   principles   consistently  applied  throughout  the  periods
involved.  Except as set forth in the Financial Statements,  including the notes
thereto,  as of the  respective  dates  thereof,  or in the  Disclosure  Letter,
neither SQL nor any of its  Subsidiaries has any other Material  liability.  All
reserves  established  by SQL in the Financial  Statements  are adequate for all
known liabilities and reasonably anticipated losses.

        4.14Absence of Other Liabilities.  Since September 30, 1996, SQL has not
incurred any  Liabilities  that would  reasonably be expected to have a Material
Adverse Effect on SQL. Except as set forth in the Disclosure Letter, neither SQL
nor any of its  Subsidiaries  is  delinquent  in the  payment  of  principal  or
interest on any outstanding debt or other obligation.

        4.15Property.  Except as set forth in the Disclosure Letter, neither SQL
nor any of its Subsidiaries owns any material real property.  SQL has full legal
title ("onbezwaarde  volledige eigendom") to all properties and assets reflected
as owned by it in the  Interim  Statements,  free and  clear of any Lien  except
those which are described in the Interim Statements, or that are not Material to
SQL and which do not interfere in any Material  respect with the use or proposed
use of the  property or the conduct of the  business  of SQL;  all the  property
(real and personal)  held or used by SQL under leases,  franchises,  licenses or
other agreements is held by it under valid, subsisting,  binding and enforceable
leases,  franchises,  licenses or other  agreements,  except  those that are not
Material to SQL and which do not interfere in any Material  respect with the use
of the property or the conduct of the business of SQL.

        4.16Permits.  SQL and each of its  Subsidiaries  has obtained and holds,
and  is in  compliance  with,  all  permits,  licenses,  franchises,  approvals,
consents and authorisations of all Governmental  Authorities  required under all
laws,  rules and  regulations  in connection  with their  business  (hereinafter
"permit" or "permits") as are necessary to own its properties and assets, and to
conduct its business in the manner  currently being  conducted,  except for such
permits, the absence of which would not, individually or in the aggregate,  have
a  Material  Adverse  Effect on SQL;  and SQL and each of its  Subsidiaries  has
fulfilled and performed all of its obligations  with respect to each such permit
and no event has occurred  which could  reasonably  be expected to result in, or
after  notice or lapse of time  would  reasonably  be  expected  to  result  in,
violation,  revocation or  termination of any such permit or result in any other
impairment of the right of the holder of any permit.

        4.17No  Illegal Acts. SQL and each of its  Subsidiaries  is presently in
material compliance with all laws, orders, rules and regulations  applicable to,
required of or binding upon it or its  business,  and neither SQL nor any of its
Subsidiaries  has  received  any notice  from any  Governmental  Authority  with
respect to any failure or alleged  failure of SQL or any of its  Subsidiaries to
comply with any such law, order,  rule or regulation,  nor, to SQL's  knowledge,
are any such notices proposed or threatened.  SQL and the SQL Stockholders  have
duly  observed  all  merger  control  regulations  (SER  fusiegedragsregels)  in
connection with the Transaction.

        4.18Prior  Issuances.  All offers and sales of the capital  stock of SQL
and each of its  Subsidiaries  prior to the date hereof and all cash payments or
distributions  of the capital stock of SQL as dividends  were made in compliance
with  the  corporate  and  securities  laws of The  Netherlands  and  all  other
applicable  laws and  regulations,  and were  not made in  contravention  of any
pre-emptive or other rights of first refusal under Dutch or other applicable law
or such entity's Articles of Association.

        4.19Tax Returns.

            (a) All  applicable tax returns and reports which have been required
to be filed by or on behalf of SQL (or any of its Subsidiaries)  with respect to
all periods  ended prior to the date of this  Agreement  have been filed (or are
the subject of valid extensions) with the appropriate  Governmental  Authorities
and all such tax returns and reports, as filed, are accurate and complete in all
Material  respects;  all Taxes  required to be shown on all such tax returns and
reports or claimed to be due from or with respect to the business of SQL (or any
of its Subsidiaries) have been paid or reflected as a liability on the Financial
Statements for appropriate periods; all deficiencies asserted as a result of any
tax audits have been paid or finally settled and no issue has been raised in any
such audit which reasonably could be expected to result in a proposed deficiency
for any other period not so audited; no set of facts exists or has existed which
would constitute grounds for the assessment of any Tax liability with respect to
any tax periods  including  periods  which have not been audited by  appropriate
Governmental  Authorities;  and there are no  outstanding  agreements or waivers
extending  the statutory  period of  limitation  applicable to any tax return or
report for any period.

            (b) All amounts  due and  payable by SQL or any of its  Subsidiaries
through the Effective Time in respect of Taxes will have been paid or adequately
reserved for in the financial  accounts of such entity. No Taxes (in particular,
no corporate  income  taxes) are or will be due  resulting  from (a breach of) a
fiscal unity or similar tax structure of which SQL or any of its Subsidiaries is
a part, as a result of this Agreement or the  Transaction.  No disputes exist or
are to be expected with any Governmental  Authority  concerning the Tax position
of SQL or any of its  Subsidiaries.  Neither SQL nor any of its Subsidiaries has
made any  distributions  that are taxable or  disposed or acquired  any asset in
such a manner  that Taxes would be due.  If SQL or any of its  Subsidiaries  has
disposed of its assets for  consideration  equal to the book value of that asset
as shown in or adopted for the purposes of its accounts,  no liability for Taxes
would reasonably be expected to arise by reference to any profit,  nor would any
relief or allowance  previously  claimed be liable to be withdrawn or subject to
drawback.

            (c)  The  Financial   Statements  reflect  certain  amounts  of  net
operating  losses  ("NOLs").  Under  Dutch and German  tax laws it is  generally
possible to set off future  earnings  against past  (recognized)  losses (in The
Netherlands,  there is an  indefinite  period  of time for the  setoff of losses
sustained after 1986; in Germany,  there is an indefinite period of time for the
setoff of losses  sustained after 1984).  The applicable tax returns and reports
which have been required to be filed by or on behalf of SQL and its Subsidiaries
with respect to the periods in which these NOLs were  sustained  have been filed
(or are the  subject  of valid  extensions)  with the  appropriate  Governmental
Authorities  and all such tax returns and  reports,  as filed,  are accurate and
complete in all Material  respects.  In this  respect,  it is noted that the tax
returns for 1994 of SQL have been filed with the  appropriate  tax  authorities,
but have not yet been accepted or adopted by them.

        4.20Intellectual Property.

            (a) The products listed in the Disclosure Letter and the support and
maintenance  services  provided  for  those  products  pursuant  to  license  or
distribution agreements are the only products (hardware,  software, services and
others) under development or manufactured, marketed, licensed, sold or otherwise
distributed  or  intended  for  distribution  by SQL or any of its  Subsidiaries
during the last five years (all such products  shall be referred to  hereinafter
collectively as the "Products").

            (b) Set  forth  in the  Disclosure  Letter  is a true,  correct  and
complete list of all  Intellectual  Property of SQL or any of its  Subsidiaries.
There is no other  Intellectual  Property  that is useful or necessary to SQL or
its Subsidiaries in the development,  manufacture,  license, sale, distribution,
purchase and use of the Products.  Such list identifies (A) SQL (or a Subsidiary
of SQL) as either the owner or licensee of each item of  Intellectual  Property;
(B) in the  cases  where  SQL  (or a  Subsidiary  of  SQL)  is a  licensee,  the
licensor(s) and license  agreements(s)  for such item of Intellectual  Property;
(C) as  applicable,  the  Product  to which such item of  Intellectual  Property
relates; and (D) as applicable,  the fee, royalty or other amount payable to any
other  party with  respect to such item of  Intellectual  Property  or  Product.
Except as set forth on  Schedule  4.20(b),  each  license  granted  to SQL (or a
Subsidiary of SQL) is perpetual and irrevocable. To the extent SQL or any of its
Subsidiaries claims to own such Products or Intellectual  Property,  SQL or such
Subsidiary  owns all right,  title and  interest in and to the  Products and the
Intellectual  Property  related thereto,  free and clear of any Lien,  including
without limitation any exclusive right,  however  described,  granted to parties
other than SQL (or one of its  Subsidiaries)  with  respect to the  Products and
other Intellectual Property. To the extent SQL or one of its Subsidiaries claims
to be  licensed  to use such  Products  or  Intellectual  Property,  SQL or such
subsidiary  has a valid and  enforceable  license for the  purposes for which it
uses such Products or Intellectual Property.

            (c)  Neither  SQL  nor  any  Subsidiary  of  SQL  (nor  any  Product
developed, manufactured,  licensed, sold or distributed by SQL or any Subsidiary
of SQL) has infringed or made any unlawful use or received notice of any claimed
infringement or unlawful use of, any trademark,  trade name, patent,  copyright,
maskwork, trade secret or other proprietary right of any third party.

            (d) SQL  and  each  of its  Subsidiaries  has  taken  all  necessary
measures to protect its rights in the  Products and the  Intellectual  Property,
and maintains all copyrights and other  intellectual  property rights  necessary
for marketing,  licensing, selling or otherwise distributing the Products in the
jurisdictions  in which they have been  distributed.  Neither SQL nor any of its
Subsidiaries has sent or otherwise  communicated to any other person any notice,
charge,  claim or assertion of, or has any knowledge of, any present,  impending
or  threatened  infringement  by such other person of any right  relating to the
Intellectual Property of SQL or any of its Subsidiaries.

            (e) SQL and each of its  Subsidiaries  has entered  into  agreements
with each of its past and present  independent  contractor  software  developers
pursuant  to which such  contractors  have  disclaimed  any  copyright  or other
intellectual property rights in the Products and the Intellectual  Property, and
have duly assigned to SQL or one of its  Subsidiaries,  as applicable,  all such
copyrights and other  intellectual  property rights.  Neither SQL nor any of its
Subsidiaries  has received notice,  orally or in writing,  that any other Person
claims any  interest in any Products or  Intellectual  Property of SQL or any of
its  Subsidiaries,  nor , to the best  knowledge of SQL, does any such claim (or
any valid basis for any such claim) exist, except the ownership and other rights
claimed by licensors under valid and enforceable licenses.

        4.21Product Warranty and Liability.

            (a) Each Product has been developed,  manufactured,  sold,  licensed
and/or delivered in conformity with all applicable  contractual  commitments and
with  all  express  or  implied  warranties  extended  by  SQL  or  any  of  its
Subsidiaries  in  connection  with such  Product,  except to the extent that the
liability  of SQL  for  non-conformity  or for  repair  and  replacement  in the
aggregate  does not exceed any warranty  reserves  maintained  in the  Financial
Statements.

            (b) SQL and its Subsidiaries  have incurred no liability arising out
of any injury to persons or property  (and, to the best  knowledge of SQL, there
is  no  basis  for  any  present  or  future  claim,  complaint,  action,  suit,
proceeding,  hearing,  investigation,  claim or demand against SQL or any of its
Subsidiaries  arising  out of any such  injury)  as a  result  of the use of the
Products.

        4.22Pension Matters.

            (a) Except as set forth in the  Disclosure  Letter,  neither SQL nor
any  of  its  Subsidiaries  is a  party  to or  makes  or is  required  to  make
contributions to any pension, profit sharing, retirement, deferred compensation,
bonus,  severance,  medical or life insurance or other employee (or ex-employee)
welfare or benefit plans,  agreements or arrangements maintained for the benefit
of any of its  employees  or is required  to make any payment of  "back-service"
contributions now or upon will be so required the termination of the employment,
retirement, death of disability of its employees.

            (b) There are no actual,  accrued or contingent pension  liabilities
or overdue  back-service  liabilities  through the withholdings of SQL or any of
its  Subsidiaries or otherwise with respect to employees and ex-employees of SQL
or any  of  its  Subsidiaries  other  than  as  reserved  for  in the  Financial
Statements.  All premiums paid by SQL or any of its Subsidiaries with respect to
such pension  liabilities  have been fully paid and are  current.  Except as set
forth in the Disclosure Letter,  since the date of the most recent balance sheet
included in the Financial  Statements,  neither SQL nor any of its  Subsidiaries
has made any  pension  undertaking  with  respect  to  employees  who have  been
employed after that date.

            (c)  All  due  contributions  and  expenses  (including   actuarial,
trusteeship,  consultancy,  legal, audit and administrative expenses) in respect
of any of the  pension  plans or  arrangements  maintained  by SQL or any of its
Subsidiaries  have been paid. All contracts of insurance  relating to such plans
or  arrangements  are  enforceable  and sufficient to cover the accrued  pension
liabilities  through  to the date  hereof,  and  there is no basis on which  the
insurers might  reasonably be expected to avoid  liability  under them.  Without
limiting the foregoing,  all lump sum and pension  benefits payable in the event
of the death of a  stockholder  of SQL who is also a director or employee of SQL
or any of its  Subsidiaries  are fully  insured,  and all  benefits  that are in
payment and that are paid up and all contingent  benefits are fully secured with
a reputable insurance company.

            (d) All of the above-described pension plans and arrangements of SQL
and any of its Subsidiaries  have at all times been operated in accordance with,
and all of the  employers  participating  in such  plans  or  arrangements  have
observed and performed all of their obligations  under, the requirements of, any
applicable  legislation.  No claims have been made or threatened  against SQL or
any  of  its  Subsidiaries  or the  administrators  of  such  pension  plans  or
arrangements  or against any person whom SQL or any Subsidiary of SQL are or may
be liable to indemnify or compensate,  in respect of any act, event, omission or
other  matter  arising  out of or in  connection  with  such  pension  plans  or
arrangements or any other retirement/death/disability benefits.

        4.23Internal  Controls.  SQL  and  each  of its  Subsidiaries  maintains
internal accounting  controls  sufficient to provide reasonable  assurances that
transactions  are recorded as necessary to permit  preparation  of  consolidated
financial  statements in conformity  with generally  accepted  Dutch  accounting
principles.  The account  balances  included in the  September  30, 1996 Interim
Statements  of SQL in  respect of  receivables,  liabilities  and  stockholders'
equity were, as of such date, accurate and complete in all material respects.

        4.24Labor and Employment Matters.

            (a) The Disclosure Letter sets forth the names, date of commencement
of employment or appointment to office and terms and conditions of employment of
all directors,  executives and  consultants of SQL and each of its  Subsidiaries
whom SQL or such Subsidiary  compensates in excess of NLG 200,000 a year. Except
as set forth in the Disclosure  Letter, no benefits in kind or other perquisites
are payable to or are provided to any such director, executive or consultant.

            (b) The  Disclosure  Letter  sets  forth  the  principal  terms  and
conditions of,  including the termination  dates and monthly rental amounts for,
all leases pertaining to automobiles  provided by SQL or any of its Subsidiaries
as a  benefit  in  kind  to any of its  directors,  executives,  consultants  or
employees.

            (c) All management or other agreements  pursuant to which managerial
services are provided to SQL or its  Subsidiaries to which SQL or any Subsidiary
of SQL is a party may be terminated by SQL or such Subsidiary upon not more than
two months' notice and without  payment of  compensation  or damages (other than
any payment for unfair and/or wrongful dismissal).  No such agreement is subject
to requalification or  recharacterization as an employment agreement as to which
SQL or any such Subsidiary  acted, or should have acted, as a withholding  agent
for tax purposes under the laws of The Netherlands.

            (d) Except  with  respect to the month in which  this  Agreement  is
entered into, there are no outstanding  arrears of salary,  wages,  holiday pay,
social  security  payments  or  other  remuneration  due to or  payable  for any
director, executive, consultant or employee of SQL or any of its Subsidiaries.

            (e) Except as set forth in the  Disclosure  Letter,  neither SQL nor
any of its  Subsidiaries  is  obligated  contractually  or otherwise to make any
bonus, incentive or other similar payments to any of its directors,  executives,
consultants or employees or to increase the rate of  remuneration  of or improve
any benefits in kind to any such Person.

            (f)  Except  as set  forth in the  Disclosure  Letter,  there are no
schemes, agreements or plans in operation by or in relation to SQL or any of its
Subsidiaries  under  which  any of its  directors,  executives,  consultants  or
employees  is entitled to any shares of SQL Capital  Stock (or any other  equity
interest  in  SQL  or  any  of  its  Subsidiaries  ),  nor  is SQL or any of its
Subsidiaries  obligated  contractually  or  otherwise  to pay any such  Person a
commission or  remuneration  of any kind  calculated by reference in whole or in
part to the turnover, profits or revenues of SQL or any of its Subsidiaries.

            (g) Within one year  preceding the date hereof,  neither SQL nor any
of its Subsidiaries has terminated any person.

            (h) None of SQL or any of its  Subsidiaries  has a collective  labor
agreement or other  agreement or  arrangement  (binding or  otherwise)  with any
trade union,  works council or other body  representing  its  employees,  nor is
there any dispute pending or threatened with any such body. No works council has
been appointed in respect of SQL or any of its Subsidiaries. Neither SQL nor any
Subsidiaries  has experienced any material  slowdown,  work  interruption,  work
stoppage or strike by any of their  employees,  nor (to the knowledge of SQL and
the SQL Stockholders) is any such action presently threatened or contemplated.

            (i) No past or present director,  executive,  employee or consultant
has any claim against SQL or any of its Subsidiaries for loss of office, arising
out of the  termination of his office or employment  (including any severance or
redundancy  payment) and there is no event that would  reasonably be expected to
give  rise to any  such  claim.  Neither  SQL nor  any of its  Subsidiaries  has
incurred any  liability  for breach of any contract of service or for  services,
for redundancy  payments,  protective awards or for wrongful dismissal or unfair
dismissal  or for  failure  to comply  with any order for the  reinstatement  or
re-engagement  of any  employee  or for any other  liability  accruing  from the
termination of any contract of employment or for services.

            (j) No gratuitous payment has been made or promised by SQL or any of
its  Subsidiaries  in  connection  with  the  actual  or  proposed  termination,
suspension  or variation of  employment  or  engagement of any present or former
director, executive, consultant or employee.

            (k)  Neither  SQL  or any of its  Subsidiaries  is  involved  in any
industrial or other dispute with any of its directors,  executives,  consultants
or employees.

            (l) Except as set forth in the  Disclosure  Letter,  neither SQL nor
any of its  Subsidiaries  has made any  loans to or  entered  into any  Material
credit  transaction  with any of its directors or executives or any Affiliate of
any such director or executive.

            (m) No  works  council  has  been  appointed  for  SQL or any of its
Subsidiaries, nor is SQL or any of its Subsidiaries in breach of any legislation
in relation to Works Councils.

        4.25Environmental   Matters.  SQL  and  each  of  its  Subsidiaries  has
conducted its business in compliance  with, and is presently in compliance with,
all applicable  Environmental Laws and has all necessary  Environmental Permits.
There are no claims or proceedings  arising under  Environmental Laws pending or
threatened  with respect to the  ownership,  use,  condition or operation of the
business of SQL or any of its Subsidiaries or any asset used in such business or
any violation or alleged violation of any applicable Environmental Laws.

        4.26Fees  and  Expenses.  Except  for  a fee  to  be  paid  by  the  SQL
Stockholders  upon  consummation of the Transaction to Alex. Brown & Sons, Inc.,
SQL has not  paid,  nor is it  obligated  to pay  any fee or  commission  to any
broker,  finder or financial  intermediary in connection  with the  transactions
contemplated by this Agreement.

                                    ARTICLE V
                         REPRESENTATIONS AND WARRANTIES
                                  OF DATASTREAM

        Datastream  hereby  represents and warrants to the SQL  Stockholders  as
follows:

        5.1 Organization; Good Standing;  Qualification and Power. Datastream is
a corporation  duly organized,  validly  existing and in good standing under the
laws of the  State  of  Delaware  and  has all  requisite  corporate  power  and
authority to own,  lease and operate its properties and to carry on its business
as now  being  conducted.  Datastream  and  each  of its  Subsidiaries  is  duly
registered  and  qualified  to do  business as a foreign  corporation  under the
corporation law of each  jurisdiction  where such registration and qualification
is required, except where the failure to so register or qualify would not have a
Material Adverse Effect on Datastream,  and no proceeding has been instituted in
any such jurisdiction  revoking,  limiting or curtailing,  or seeking to revoke,
limit or curtail, such power and authority or qualification.

        5.2  Authority.   Datastream  has  all  requisite  corporate  power  and
authority to enter into this  Agreement and each other  Transaction  Document to
which it is a party, to perform its obligations  hereunder and thereunder and to
consummate the transactions contemplated hereby and thereby (including,  without
limitation,  the issuance of the  Datastream  Common Stock and the filing of the
notification  and supporting  documentation  to Nasdaq/NMS  described in Section
6.4),  and  the  execution  and  delivery  of  this  Agreement  and  each  other
Transaction  Document to which it is a party by Datastream and the  consummation
by Datastream of the transactions contemplated hereby and thereby have been duly
authorized by all necessary  corporate  action on the part of  Datastream.  This
Agreement and each other Transaction Document to which Datastream is a party has
been duly executed and delivered by Datastream  and,  assuming due execution and
delivery of this Agreement and such other agreements by the other parties hereto
and  thereto,  this  Agreement  and each  other  Transaction  Document  to which
Datastream is a party  constitutes the valid and binding agreement of Datastream
enforceable in accordance with its terms.

        5.3  Noncontravention.  The execution,  delivery and performance of this
Agreement and each other  Transaction  Document to which  Datastream is a party,
the  consummation  of the  transactions  contemplated  hereby and  thereby,  and
compliance with the provisions hereof and thereof, will not:

            (a) conflict  with,  result in a violation of, result in a breach of
or cause a default under (with or without notice or lapse of time, or both),  or
give rise to a right of termination,  amendment, cancellation or acceleration of
any obligation contained in, or require the consent or approval of any party to,
or result in the  creation of any Lien upon any of the  properties  or assets of
Datastream or any of its Subsidiaries under any term, condition or provision of,
any loan or credit agreement,  note, bond, mortgage,  indenture,  lease or other
agreement, instrument, permit, concession, franchise, license, judgement, order,
decree, statute, law, ordinance,  rule or regulation applicable to Datastream or
any of its Subsidiaries or their respective properties or assets, other than any
such conflicts,  violations,  defaults, losses, and Liens which, individually or
in the aggregate, would not have a Material Adverse Effect on Datastream.

            (b)   violate any provision of the Certificate of
Incorporation or Bylaws of Datastream; or

            (c) require the consent,  approval,  order or  authorization  of, or
registration,  declaration  or filing  with,  any  Governmental  Authority to be
obtained by  Datastream  in  connection  with the execution and delivery of this
Agreement or the consummation of the transactions contemplated hereby except for
the filing with the SEC of such reports and  information  under the Exchange Act
and the  rules  and  regulations  promulgated  by the SEC  thereunder  as may be
required in connection  with this  Agreement and the  transactions  contemplated
hereby.

        5.4 SEC Documents.  Each of the SEC Documents filed to date, when it was
filed with the SEC,  conformed in all material  respects to the  requirements of
the Exchange Act and the rules and  regulations  of the  Commission  thereunder,
and,  as of their  filing  date,  none of such  documents  contained  an  untrue
statement of a material  fact or omitted to state a material fact required to be
stated therein or necessary to make the statements therein not misleading.

        5.5  Capitalization.  Datastream's  authorized,  issued and  outstanding
capital stock is, as of the respective  dates  thereof,  as set forth in the SEC
Documents.  All of the issued  shares of capital  stock of the Company have been
duly authorized and validly issued, are fully paid and nonassessable and are not
entitled or subject to any preemptive, preferential or similar rights.

        5.6 No  Calamities.  Since  the date of the most  recent  balance  sheet
included in the  financial  statements  included in the SEC  Documents,  neither
Datastream  nor any of its  Subsidiaries  has  sustained  any  material  loss or
interference  with its business from fire,  explosion,  flood or other calamity,
whether  or not  covered  by  insurance,  or from  any  labor  dispute  or court
governmental action, order or decree.

        5.7 No Changes.  Since the  respective  date of the most recent  balance
sheet  included  in the  unaudited  financial  statements  included  in the  SEC
Documents,  (i) neither  Datastream nor any of its Subsidiaries has incurred any
liabilities  or  obligations,   direct  or  contingent,   or  entered  into  any
transactions,  not in the  ordinary  course of  business,  that are  material to
Datastream  and its  Subsidiaries  taken as a  whole,  (ii)  Datastream  has not
purchased any of its  outstanding  capital stock or declared,  paid or otherwise
made any dividend or distribution of any kind on its capital stock,  (iii) there
has not been  any  material  change  in the  capital  stock,  long-term  debt or
short-term debt (other than changes  effected in the ordinary course of business
consistent  with  Datastream's  past  practice and in a manner  permitted by the
DGCL) of  Datastream or any of its  Subsidiaries,  and (iv)  Datastream  has not
suffered any Material Adverse Effect.

        5.8 Stock Issuance.  The shares of Datastream  Common Stock to be issued
as Stock Consideration have been duly authorized,  and when issued and delivered
against delivery of the certificates representing shares of SQL Capital Stock as
provided  herein,  will be validly  issued,  fully paid and  nonassessable;  the
certificates  evidencing  the shares of Datastream  Common Stock to be issued as
Stock Consideration will comply with all applicable requirements of the DGCL and
the delivery of such certificates will pass valid title to such shares, free and
clear of any Lien. Assuming the accuracy and completeness of the representations
of the SQL Stockholders  set forth in Section 4.5 hereof,  the offer and sale of
the shares of Datastream Common Stock to be issued as Stock  Consideration  will
be issued in compliance with Regulation S.

        5.9  Financial   Statements.   The  consolidated   financial  statements
(including the related notes) of Datastream  and its  consolidated  subsidiaries
included  in the SEC  Documents  were  prepared  in  accordance  with  generally
accepted U.S. accounting principles  consistently applied throughout the periods
involved and fairly  present the financial  position,  results of operations and
cash flows of Datastream and its Subsidiaries,  on a consolidated  basis, at the
dates and for the periods presented.

        5.10Internal Controls. Datastream and each of its Subsidiaries maintains
internal   accounting   controls   which  provide   reasonable   assurance  that
transactions  are recorded as necessary to permit  preparation  of  Datastream's
consolidated financial statements in accordance with generally accepted U.S.
accounting principles.

                                   ARTICLE VI
                       ADDITIONAL COVENANTS AND AGREEMENTS

        6.1  Conduct of  Business  by SQL  Pending  the  Transaction.  Except as
otherwise  contemplated hereby, after the date hereof and prior to the Effective
Time or earlier termination of this Agreement, unless Datastream shall otherwise
agree in writing or as otherwise  expressly  contemplated  by this Agreement (it
being agreed, however, that SQL shall be solely responsible for its operations),
SQL and each of its Subsidiaries shall:

            (a)   conduct its businesses in the ordinary and usual course
of business and consistent with past practice;

            (b) not (i) amend or propose to amend its  Articles of  Association;
(ii) split,  combine or reclassify its  outstanding  capital stock;  or (iii) or
declare,  set aside or pay any dividend or distribution  payable in cash, stock,
property or otherwise;

            (c) not (i) authorize the issuance of, or issue, sell, grant, pledge
or  dispose  of, or agree to issue,  sell,  grant,  pledge or  dispose  of,  any
additional shares of, or any options,  warrants or rights of any kind to acquire
any shares of, its capital  stock of any class or any debt or equity  securities
convertible into or exchangeable for such capital stock (except for the issuance
of shares of SQL  Capital  Stock (x) upon the  exercise  of  options,  warrants,
rights or other  securities  exercisable for or convertible into such shares and
(y) upon consummation of the transaction  referred to in Section 7.3(g));  adopt
any stock option plans or  agreements  with respect  thereto;  sell  (including,
without  limitation,  by  sale-leaseback),  pledge,  dispose of or encumber  any
material  assets or  interests  therein,  other than in the  ordinary  course of
business and consistent with past practice;  (ii) redeem,  purchase,  acquire or
offer to purchase or acquire  any shares of its  capital  stock;  or (iii) enter
into any contract,  agreement,  commitment or arrangement with respect to any of
the foregoing;

            (d)  use  its  best   efforts  to  preserve   intact  its   business
organizations and goodwill, keep available the services of its present executive
officers and key employees, and preserve the goodwill and business relationships
with suppliers, distributors, customers and others having business relationships
with it;

            (e)  confer  on a  regular  and  frequent  basis  with  one or  more
representatives  of Datastream to discuss material  operational  matters and the
general status of ongoing operations;

            (f)  promptly  notify  Datastream  of any  material  changes  in the
business,  properties,  assets,  condition  (financial  or  other),  results  of
operations or prospects of SQL or any of its Subsidiaries;

            (g)  not  acquire,  or  publicly  propose  to  acquire,  all  or any
substantial  part of the business and  properties or capital stock of any Person
not a party to this  Agreement,  whether by merger,  purchase of assets,  tender
offer or otherwise;

            (h) not initiate, solicit or materially encourage (nor shall any SQL
Stockholder or any Affiliate of SQL or any SQL Stockholder initiate,  solicit or
encourage),  and  will  direct  and  use  its  best  efforts  to  cause  any SQL
Stockholder,   officer,   director,   employee,   investment  banker,  attorney,
accountant or other agent  employed or retained by SQL not to initiate,  solicit
or encourage,  any proposal or offer to acquire all or any  substantial  part of
the business and properties or capital stock of SQL, whether by merger, purchase
of assets, tender offer or otherwise;

            (i) not enter into or materially  amend any  employment,  severance,
bonus,  special pay  arrangement  with respect to  termination  of employment or
other similar  arrangements or agreements with any directors,  executives or key
employees;

            (j) other than in the  ordinary  course of business  and  consistent
with past practice,  not adopt,  enter into or amend any bonus,  profit sharing,
compensation,  stock option, pension, retirement, deferred compensation,  health
care,  employment or other  employee  benefit plan,  agreement,  trust,  fund or
arrangement  for the benefit or welfare of any  employee  or retiree,  except as
required to comply  with  changes in  applicable  law  occurring  after the date
hereof;

            (k) other than in the  ordinary  course of business  and  consistent
with past practice,  not to make any payments to any Affiliate or waive, release
or discharge any Affiliate from any  indebtedness  owed to SQL or any Subsidiary
of SQL, including without limitation,  the forgiveness of any account receivable
from any such Affiliate;

            (l) other than in the  ordinary  course of business  and  consistent
with past practice,  not incur any  indebtedness for borrowed money or guarantee
any such  indebtedness or issue or sell any debt securities or make any loans or
advances; and

            (m) not agree in writing or otherwise  to take any of the  foregoing
actions or any other  action  which  would make any  representation  or warranty
contained in Article IV untrue or  incorrect  in any material  respect as of the
Closing Date.

        Notwithstanding the foregoing covenants set forth in subsections (a) and
(d) above,  Datastream  recognizes and acknowledges that the announcement of the
Transaction may cause certain of SQL and its Subsidiaries' customers,  executive
officers,  key employees,  suppliers,  distributors  and others having  business
relationships with SQL or any of its Subsidiaries to alter or seek to alter such
relationships  with SQL and its  Subsidiaries.  Datastream agrees that SQL shall
not be required to obtain the prior written  consent of Datastream to changes or
proposed  changes in such  relationships  initiated by parties other than SQL or
its  Subsidiaries  primarily as a result of the announcement of the Transaction,
although Datastream shall be entitled to receive prompt notice thereof.

        6.2 Access to Information.

            (a) SQL and its  Subsidiaries  shall  afford to  Datastream  and its
accountants, counsel, lenders and other representatives reasonable access during
normal business hours and upon reasonable  notice throughout the period prior to
the Effective Time to all of its properties,  books, contracts,  commitments and
records  (including,  but not limited to, tax returns) and,  during such period,
shall  furnish  promptly  to  Datastream  all other  information  and  documents
concerning their respective  businesses,  properties and personnel as Datastream
may reasonably request;  provided that no investigation pursuant to this Section
6.2 or otherwise shall affect any  representations  or warranties made herein or
the conditions to the  obligations  of the respective  parties to consummate the
Transaction. These access rights shall include a right on the part of Datastream
to cause to be made, at its expense,  such  environmental  audit or audits as it
deems necessary to properly evaluate any Liability SQL may have under applicable
Environmental Laws.

            (b)  Datastream  shall  afford  to the SQL  Stockholders  and  their
accountants,  counsel and other representatives  reasonable access during normal
business  hours and upon  reasonable  notice  throughout the period prior to the
Effective  Time  to  all  of  its  respective  properties,   books,   contracts,
commitments and records (including, but not limited to, tax returns) and, during
such period, shall furnish promptly to SQL (i) a copy of each report,  schedule,
notice and other document  filed or received by it pursuant to the  requirements
of federal or state  securities  laws or filed with or  received  by it from the
SEC, or the Nasdaq/NMS and (ii) all other  information and documents  concerning
its business,  properties and personnel as SQL may reasonably request;  provided
that no investigation  pursuant to this Section 6.2(b) or otherwise shall affect
any  representations  or  warranties  made  herein  or  the  conditions  to  the
obligations of the respective parties to consummate the Transaction.

        6.3 Filings with the SEC. As soon as practicable  after the date hereof,
Datastream  shall  promptly  prepare and file and assist SQL and its  respective
officers and directors with the preparation and filing of filings required under
the Exchange Act, the  Securities  Act or any other federal or state  securities
laws relating to the Transaction,  including without limitation, Form 8-K, Forms
3, 4 and 5 under  Section 16 of the  Exchange Act and, if  applicable,  Schedule
13D.

        6.4 Nasdaq/NMS  Listing.  Datastream shall (i) notify Nasdaq/NMS,  at or
prior to the Effective  Time, of the issuance of Datastream  Common Stock to the
SQL  Stockholders  in connection with the Transaction and request the listing of
additional  shares of Datastream  Common Stock on  Nasdaq/NMS,  and (ii) furnish
Nasdaq/NMS with all required and requested  documentation in connection with the
notice described in (i) above, including but not limited to, (x) copies of board
and  stockholder  resolutions,  as  applicable,  approving  the  issuance of the
Datastream  Common Stock and the listing of additional  shares on Nasdaq/NMS and
(y) the required additional listing filing fee.

        6.5 Expenses.  Whether or not the Transaction is consummated,  all costs
and expenses  incurred in connection  with this  Agreement and the  transactions
contemplated  hereby shall be paid by the party incurring such expenses.  If not
paid prior to the Closing Date, the SQL Stockholders shall reimburse  Datastream
at Closing or as soon as practicable thereafter for all SQL expenses.

        6.6 Agreement to Cooperate.  Subject to the terms and conditions  herein
provided,  each of the parties  hereto  shall use all best  efforts to take,  or
cause to be taken, all action to do, or cause to be done, all things  necessary,
proper or advisable under applicable laws and regulations to consummate and make
effective the transactions  contemplated by this Agreement,  including using its
best efforts to obtain all necessary or appropriate governmental and third-party
waivers,  consents and  approvals,  to effect all  necessary  registrations  and
filings to proceed with the Transaction as expeditiously as possible. Each party
hereto agrees to allow the other to review each  regulatory  filing made by such
party prior to the filing thereof during the term of this Agreement.

        6.7 Public  Statements.  The parties shall consult with each other prior
to issuing any public  announcement  or statement with respect to this Agreement
or the  transactions  contemplated  hereby  and shall not issue any such  public
announcement or statement prior to such consultation,  except as may be required
by law;  provided,  however,  that Datastream shall not undertake or cause to be
undertaken  any  "Directed  Selling  Efforts"  as defined  in Section  902(b) of
Regulation S.

        6.8  Release.  Each of the SQL  Stockholders  does  hereby  release  and
forever discharge SQL, its Subsidiaries,  its respective  officers and directors
and  each of the  other  SQL  Stockholders  from  any and all  claims,  demands,
actions,  causes of actions,  losses and expenses (including attorneys' fees and
expenses)  of  any  kind  whatsoever,  whether  arising  out  of a  contract  or
otherwise,  that such SQL  Stockholder  has had, now has or may  hereafter  have
against SQL, any Subsidiary of SQL and any successor to SQL and such  Subsidiary
or to their respective  businesses,  any of the officers and directors of SQL or
any of its  Subsidiaries  (in his capacity as such) or any other SQL Stockholder
(in his capacity as such);  provided,  that such release shall not relate, or be
deemed to relate,  to the  obligations of SQL or any Subsidiary of SQL under any
written  agreement of employment  or consulting or managerial  services with any
such SQL Stockholder or under any written financing  agreement with any such SQL
Stockholder,  provided,  further,  that such  agreements  are  identified in the
Disclosure Letter.

        6.9 Amounts  Payable By SQL  Stockholders.  Promptly  upon  request from
Datastream, and in any event within 20 business days following the Closing Date,
each SQL Stockholder who shall owe any  indebtedness to SQL (or any Affiliate of
SQL) or whose Affiliate  shall owe any  indebtedness to SQL (or any Affiliate of
SQL) shall repay any such amounts to SQL in full.

        6.10Nine-Month  Review.  As soon as  practicable  after the date hereof,
Datastream's independent  accountants,  KPMG Peat Marwick ("KPMG"), shall review
the Interim Statements of SQL based on practices and procedures  consistent with
those used by  Deloitte & Touche in its most  recent  audit of the  consolidated
financial  statements of SQL. Any proposed adjustments to the Interim Statements
recommended  by KPMG shall be reviewed by Deloitte & Touche,  and agreed upon by
KPMG and Deloitte & Touche.  This review shall  include a "valuation  review" to
assist  Datastream  in  properly  allocating  the  Total  Consideration  between
tangible and intangible assets.

        6.11Resale Restrictions. Each SQL Stockholder agrees not to resell
or cause the resale of the Datastream Common Stock received by such SQL
Stockholder as Stock Consideration in the United States or to a "U.S.
person" (as such term is defined in Regulation S) for a period of 40 days
after the Closing.

        6.12Closing Matters. Datastream shall engage and instruct its counsel to
prepare an opinion  substantially in the form described in Section 7.2(b) hereof
and SQL and the SQL  Stockholders  shall  engage  and  instruct  its  counsel to
prepare an opinion substantially in the form described in Section 7.3(b) hereof.

        6.13Removal  of Regulation S Legend.  Upon the  expiration of the 40-day
"restricted  period"  (as such term is  defined  in  Regulation  S) and upon the
request of any SQL  Stockholder,  Datastream shall cause the Regulation S Legend
to be removed from the certificates representing the shares of Datastream Common
Stock to be issued as Stock  Consideration,  or issue replacement  certificates,
provided,  however,  that such Regulation S Legend shall be replaced as follows:
"The securities  represented by this  certificate have not been registered under
the Securities Act of 1933, as amended (the  "Securities  Act"),  and may not be
offered  or  sold  absent  registration  or an  applicable  exemption  from  the
registration requirements of the Securities Act."

        6.14Stockholders'  Equity.  The  SQL  Stockholders  shall  maintain  the
stockholders'  equity of SQL and its  Subsidiaries on a consolidated  basis such
that such  stockholders'  equity is, as of the Closing Date,  not less than such
amount  reflected in the Interim  Statements as of September 30, 1996;  provided
that  (i) the  stockholders'  equity  shall  be  calculated  on a basis  that is
consistent with the preparation of the Interim Statements and in accordance with
generally  accepted Dutch accounting  standards,  (ii) the calculation shall not
take into  account  restructuring  costs,  and (iii)  the  calculation  shall be
subject to the mutual approval of KPMG and Deloitte & Touche.

                                   ARTICLE VII
                               CLOSING CONDITIONS

        7.1   Conditions  to  Each  Party's   Obligations   to  Consummate   the
Transaction.  The  respective  obligations  of  each  party  to  consummate  the
Transaction shall be subject to the fulfilment at or prior to the Effective Time
of the following conditions precedent:

            (a)  The  shares  of  Datastream   Common  Stock   issuable  in  the
Transaction  shall be listed on the Nasdaq/NMS upon their issuance provided that
Datastream shall have complied with Section 6.4 hereof in connection therewith;

            (b) No preliminary or permanent  injunction or other order or decree
by any court of competent  jurisdiction  that prevents the  consummation  of the
Transaction (other than any preliminary or permanent injunction, order or decree
issued at the request of a party hereto, which injunction, order or decree shall
not then be utilized as a condition to such party's obligation to consummate the
Transaction) shall have been issued and remain in effect (each party agreeing to
use all best efforts to have any such injunction, order or decree lifted).

        7.2  Conditions  to  Obligation  of SQL  and  the  SQL  Stockholders  to
Consummate the  Transaction.  The obligation of SQL and the SQL  Stockholders to
consummate the Transaction shall be subject to the fulfilment at or prior to the
Effective Time of the following additional conditions precedent:

            (a)  Datastream  shall have  performed in all material  respects its
obligations  contained in this Agreement required to be performed at or prior to
the Effective Time;

            (b) SQL and the SQL Stockholders shall have received an opinion from
counsel to Datastream,  reasonably  satisfactory to SQL, dated as of the Closing
Date, in form and scope  customary for  transactions  of this type. Such opinion
shall address, the authority of Datastream to enter into each of the Transaction
Documents  to  which  it  is  a  party  and  consummate  the  Transaction,   the
enforceability  of each of the  Transaction  Documents  to  which  it is a party
against Datastream,  the non-contravention of Datastream's  execution,  delivery
and performance of each of the  Transaction  Documents to which it is a party in
terms  of its  Certificate  of  Incorporation,  Bylaws  and  other  specifically
identified agreements, the absence of any requirement that governmental or third
party  consents  not yet  obtained  be  obtained  prior to  consummation  of the
Transaction  and that the shares of  Datastream  Common  Stock  being  issued in
connection  with the  Transaction  are not required to be  registered  under the
Securities Act and are being offered pursuant to an exemption from  registration
under Regulation S;

            (c) Since the date  hereof,  in the course of their  continuing  due
diligence  investigation  pursuant to Section 6.2(b), the SQL Stockholders shall
not  have  discovered  any  material   inaccuracy  or   incompleteness   in  the
representations  and  warranties  made by Datastream in Article V hereof,  which
material  inaccuracy or incompleteness is caused by gross  misrepresentation  or
fraud on the part of Datastream  or reflects  illegal  business  activity on the
part of Datastream or any of its Subsidiaries; and

            (d) Datastream and each of the SQL  Stockholders  shall have entered
into a  Registration  Rights  Agreement  substantially  in the form of Exhibit C
hereto.

        7.3   Conditions  to   Obligation   of  Datastream  to  Consummate   the
Transaction. The obligation of Datastream to consummate the Transaction shall be
subject to the  fulfilment  at or prior to the  Effective  Time of the following
additional conditions precedent:

            (a)  SQL  shall  have   performed  in  all  material   respects  its
obligations  contained in this Agreement required to be performed at or prior to
the Effective Time;

            (b)  Datastream  shall have  received an opinion from counsel to SQL
and the SQL Stockholders, reasonably satisfactory to Datastream, dated as of the
Closing Date, in form and scope  customary for  transactions  of this type. Such
opinion  shall address the  authority of SQL and the SQL  Stockholders  to enter
into each of the Transaction Documents to which it is a party and consummate the
Transaction, the enforceability of each of the Transaction Documents to which it
is a party  against  SQL and the SQL  Stockholders,  the  binding  nature of the
Transaction  Documents  as against  the spouse of any SQL  Stockholder  who is a
natural person, the  non-contravention of such parties' execution,  delivery and
performance of each of the Transaction Documents to which it is a party in terms
of the Articles of  Association  and other  specifically  identified  agreements
(so-called "finance" agreements only) of SQL or any SQL Stockholder, the absence
of any  requirement  that any  governmental  or  third  party  consents  not yet
obtained  be  obtained  prior to  consummation  of the  Transaction,  the  valid
transfer of the shares of SQL Capital Stock at the Effective Time free and clear
of any Liens and the absence of any other outstanding equity interests in SQL or
warrants,  rights or options to purchase the same other than those shares of SQL
Capital Stock transferred at the Effective Time;

            (c)   Each of Peter A.G. Huisman and Vincent Mom shall have
executed and delivered Service Agreements to Datastream;

            (d)   Paul de Gruyter shall have executed and delivered the
Severance and Non-Compete Agreement to Datastream;

            (e) Each of the SQL  Stockholders  shall have executed and delivered
the Escrow  Agreement and deposited the Escrow Shares in the escrow fund created
thereby;

            (f) Since the date  hereof,  in the  course  of its  continuing  due
diligence investigation pursuant to Section 6.2(a) hereof,  Datastream shall not
have discovered any material inaccuracy or incompleteness in the representations
and warranties made by the SQL Stockholders in Article IV hereof, which material
inaccuracy or  incompleteness is caused by gross  misrepresentation  or fraud on
the part of the SQL Stockholders or reflects  illegal  business  activity on the
part of SQL or any of its Subsidiaries;

            (g)   After September 30, 1996, SQL shall have taken into
equity an amount equal to U.S. $1.447 million of additional capital;

            (h) No options,  warrants  or other  securities  exercisable  for or
convertible or exchangeable  into capital stock or other equity interests of SQL
of any kind or nature whatsoever shall be outstanding; the shares of SQL Capital
Stock  transferred to Datastream shall constitute all of the outstanding  equity
interests (including without limitation any option, warrant, right to acquire or
right of conversion  with respect to any such equity  interests) in SQL; and all
shares of preferred stock of SQL shall have been converted into shares of common
stock of SQL; and

            (i) SQL and each of its Subsidiaries shall have made all payments of
principal and interest on any outstanding  debt or other  obligation that is due
or to be paid on or before  December 31, 1996 or such  payments  shall have been
extended.

                                  ARTICLE VIII
                                   TERMINATION

        8.1  Termination.  This Agreement may be terminated and the  Transaction
contemplated hereby may be abandoned (and the purchase and sale of the shares of
SQL Capital Stock effected by virtue of Section 2.2(a) hereof  annulled  without
being  given any effect  whatsoever)  at any time prior to the  Effective  Time,
whether  before or after  approval  by the  stockholders  of any of the  parties
hereto, if any such approval is required:

            (a)   by mutual consent of Datastream and SQL;

            (b) by either  Datastream  or SQL if (i) the  Transaction  shall not
have been consummated on or before January 31, 1997 (the "Termination Date") (it
being  acknowledged that each party is obligated to cooperate in accordance with
Section  6.6  hereof)  or  (ii)  any  court  of  competent  jurisdiction  in The
Netherlands,  the  United  States  or any  State  shall  have  issued  an order,
judgement  or decree  (other than a temporary  restraining  order)  restraining,
enjoining or otherwise  prohibiting the Transaction,  provided that the right to
terminate this Agreement under this Section 8.1(b) shall not be available to any
party whose failure to fulfil any  obligation  under this Agreement has been the
cause of, or  resulted  in,  the  failure of the  Effective  Time to occur on or
before such date;

            (c)  by  Datastream  if  there  has  been  a  failure  of any of the
conditions  set forth in Section 7.3 hereof (or any of such  conditions has been
rendered impossible to perform prior to the Closing Date); or

            (d) by the SQL  Stockholders  if there has been a failure  of any of
the  conditions  set forth in Section 7.2 hereof (or any of such  conditions has
been rendered impossible to perform prior to the Closing Date).

        8.2 Effect of Termination. In the event of termination of this Agreement
by either  Datastream or SQL, as provided in Section 8.1, this  Agreement  shall
forthwith become void and, without limiting the generality of the foregoing, the
sale and  purchase  contemplated  by Section  2.2(a)  hereof  shall be  annulled
without  being given any effect  whatsoever.  Nothing in this  Section 8.2 shall
relieve  any party from  liability  for any breach of this  Agreement  occurring
prior to such termination or giving rise to such termination.

                                   ARTICLE IX
                         SURVIVAL OF REPRESENTATIONS AND
                         WARRANTIES AND INDEMNIFICATION

        9.1 Survival of Representations and Warranties.

            (a)  All  representations,  warranties,  agreements,  covenants  and
obligations  made or  undertaken by SQL or any of the SQL  Stockholders  in this
Agreement  shall  survive  the  Closing  hereunder  and  shall  not merge in the
performance  of any  obligation  by any  party  hereto.  Each of SQL and the SQL
Stockholders  acknowledge and agree that prior to the Effective Time, Datastream
intends  to  perform  such  investigation  of SQL as it may  deem  necessary  or
appropriate;  however, no investigation by Datastream either before or after the
Effective Time will diminish or obviate any of the representations,  warranties,
covenants or agreements  made or to be performed by SQL or the SQL  Stockholders
pursuant to this  Agreement,  and all other  agreements  referred to herein,  or
Datastream's right to rely upon such representations,  warranties, covenants and
agreements.

            (b)  All  representations,  warranties,  agreements,  covenants  and
obligations made or undertaken by Datastream in this Agreement shall survive the
Closing  hereunder and shall not merge in the  performance  of any obligation by
any party hereto. Datastream acknowledges and agrees that prior to the Effective
Time, the SQL Stockholders intend to perform such investigation of Datastream as
they each deem necessary or appropriate;  however,  no  investigation by the SQL
Stockholders  either before or after the Effective Time will diminish or obviate
any of the  representations,  warranties,  covenants or agreements made or to be
performed by  Datastream  pursuant to this  Agreement  and all other  agreements
referred  to  herein,  or  the  SQL  Stockholders'   right  to  rely  upon  such
representations, warranties, covenants and agreements.

        9.2  Obligation  of  SQL  Stockholders  to  Indemnify.  Subject  to  the
limitations of Section 9.5, each of the SQL  Stockholders  (exclusive of Marconi
Stichting),  severally  and  proportionately  in the  proportions  set  forth on
Schedule 2.2, agrees to indemnify and hold Datastream  harmless from and against
all  Liabilities  asserted  against,  imposed upon or incurred by  Datastream by
reason of or resulting  from (a) a breach of any  representation  or warranty of
any SQL  Stockholder  contained  in Article  IV  hereof,  or (b) a breach of any
covenant  or  agreement  of SQL or any  SQL  Stockholder  contained  in or  made
pursuant  to this  Agreement  (and not,  in either  such case,  the subject of a
specifically disclosed exception set forth in the Disclosure Letter).

        9.3  Obligations of Datastream to Indemnify.  Subject to the limitations
of Section 9.5,  Datastream  agrees to indemnify  and hold the SQL  Stockholders
harmless  from and against all  Liabilities  asserted  against,  imposed upon or
incurred by the SQL  Stockholders by reason of or resulting from (a) a breach of
any  representation  or warranty of Datastream  contained in or made pursuant to
this  Agreement,  or (b) a breach of any  covenant or  agreement  of  Datastream
contained in or made pursuant to this Agreement.

        9.4  Conditions of  Indemnification  with Respect to Third Party Claims.
Each party indemnified (the "Indemnified Party") under the provisions of Section
9.2 or 9.3 hereof, upon receipt of written notice of any claim or the service of
a summons,  or other  initial  legal  process  upon it in any action  instituted
against  it, in  respect  of which  indemnity  may be sought on  account  of any
indemnity agreement contained in Section 9.2 or 9.3 hereof,  shall promptly give
notice of such claim or the commencement of such action,  or threat thereof,  to
each other party  ("Indemnifying  Party")  from whom  indemnity  shall be sought
hereunder.  Each  Indemnifying  Party  shall be  entitled  at its own expense to
participate in the defense of such claim or action, or, if it shall so elect, to
assume (in conjunction  with any other  indemnifying  party) the defense of such
claim or  action,  in which  case the  defense  shall be  conducted  by  counsel
reasonably acceptable to the Indemnified Party, and such Indemnified Party shall
bear the fees and expenses of any additional  counsel retained by it; but if the
Indemnifying  Party  shall  elect not to assume  the  defense  of such  claim or
action,  the Indemnifying  Party shall reimburse each Indemnified  Party for the
reasonable fees and expenses of any counsel retained by it.  Notwithstanding the
above,  should  any  Indemnified  Party  reasonably  conclude  that there may be
defenses  available  to it that  are  different  from  or  additional  to  those
available to the Indemnifying Party, the Indemnifying Party shall have the right
to direct the defense of such  action on behalf of the  Indemnified  Party,  but
only after consultation with the Indemnified Party. The Indemnifying Party shall
also have the right to settle or compromise  any such claim but only if it shall
first obtain the written consent of the Indemnified  Party,  which consent shall
not be unreasonably  withheld.  The terms "Indemnified  Party" and "Indemnifying
Party," as used herein shall,  in appropriate  circumstances,  be deemed to mean
Datastream,  on the one  hand,  and the SQL  Stockholders  (collectively  and as
represented by the SQL Stockholders' Representative), on the other hand.

        9.5 Limitations on Liability.

            (a) The Indemnifying  Parties shall not be required to indemnify the
Indemnified Party unless the amount of any Claim, when aggregated with all other
Claims of such Indemnified  Party, shall exceed $250,000 (the "Minimum Aggregate
Liability  Amount"),  at which time Claims may only be  asserted  for amounts in
excess of $125,000;  provided,  however,  that the foregoing  Minimum  Aggregate
Liability  Amount shall not apply to any Liability  which results from or arises
out of fraud or any intentional  misrepresentation or an intentional breach of a
representation or warranty made pursuant to this Agreement.

            (b) Except for Claims  for which  proper  notice of  indemnification
shall have been submitted in good faith and in reasonable  detail not later than
the close of business  on the dates set forth in items (i) and (ii)  below,  (i)
except as otherwise set forth in item (ii) below, all rights of  indemnification
pertaining to any sections of this Agreement  shall terminate and expire on July
1, 1998 and (ii) all rights of  indemnification  pertaining to Sections 4.19 and
4.22 (insofar,  but only insofar,  as any submission of such Claim in connection
with Section 4.22  relates to a related  alleged  liability of SQL or any of the
Subsidiaries  causing a ground  for  indemnification,  which  liability  was not
discovered  before July 1, 1998 and could surface under an applicable  statutory
period of limitation allowing for the pertinent Governmental Authority to assert
such liability  during such applicable  statutory  period of limitation)  hereof
shall  terminate  and expire five  Business Days after such time as the relevant
statutes of limitation pertaining to such matters (including without limitation,
any period for which such  statutes  of  limitation  have been  tolled,  and any
period of extension of the relevant tax statutes) expire.

        9.6 Reduction  for Certain  Benefits.  Any insurance or other  recovery,
payment or credit received by the  Indemnified  Party from any third party which
was not taken into account in computing  the amount of any Claim shall  promptly
be paid over to the Indemnifying  Party up to the amount of the  indemnification
payment made by the Indemnifying Party with respect thereto, such that the total
amount received by the  Indemnified  Party from the  Indemnifying  Party and the
third parties in connection  with such Claim shall not exceed the amount of such
Claim.

        9.7 Cap;  No Release  for Fraud,  Ownership  Representations.  Except as
otherwise set forth in the following  sentence,  the aggregate  liability of any
SQL Stockholder  hereunder shall be limited to the  proportionate  share of such
SQL Stockholder as shown on Schedule 2.2 of the Total  Consideration;  provided,
that for  purposes  of  determining  whether  any such  Person  has  indemnified
Datastream to the full extent of such Person's  proportionate share of the Total
Consideration,   if,  in  satisfaction  of  an  indemnification   obligation  to
Datastream  hereunder,  such  Person  decides  to satisfy  such  indemnification
obligation by transferring  shares of Datastream Common Stock at a time when the
Stock Price (as adjusted for stock splits,  combinations  and other like events)
is less than $22.625 per share, then each such share shall be attributed a value
of $22.625 per share notwithstanding such Stock Price. Nothing contained in this
Agreement (either in terms of proportionate  liability or the termination of any
indemnification  period) shall relieve any SQL  Stockholder  of any liability or
limit any liability  that he, she or it may have on account of any breach of any
representation  or warranty  contained in Section 4.6 above,  nor shall anything
contained in this  Agreement  relieve any SQL  Stockholder or any other party to
this  Agreement of any liability or limit any  liability  that he, she or it may
have in the case of fraud in connection  with the  transaction  contemplated  by
this Agreement or in connection with the delivery of any certificate required to
be delivered under the terms hereof.

        9.8 Subrogation Rights. In the event that an Indemnifying Party shall be
obligated  to indemnify an  Indemnified  Party  pursuant to this Article IX, the
Indemnifying  Party shall, upon payment of such indemnity in full, be subrogated
to all rights of the  Indemnified  Party with respect to the Claim to which such
indemnification  relates;  provided,  however, that the Indemnifying Party shall
only be  subrogated  to the extent of any  amount  paid by it  pursuant  to this
Article  IX in  connection  with such  Claim and  provided  further  that no SQL
Stockholder shall have any subrogation rights against SQL.

        9.9 Establishment of Escrow; Indemnification Not Limited.

            (a) At the  Effective  Time,  pursuant to Section 2.2 (iii)  hereof,
Datastream  shall deliver the Escrow  Shares to the Escrow  Agent,  which Escrow
Shares shall be held in escrow  pursuant to the terms of this  Agreement and the
Escrow Agreement.

            (b) The  parties  to this  Agreement  understand  and agree that the
establishment  of the  escrow  referred  to in  paragraph  (a)  above is not the
exclusive  source for  indemnification  pursuant to this Agreement and that such
escrow in no way limits the amount of Claims  that may be made  pursuant to this
Agreement.

        9.10Interest.  If any  payment  required  to be made by an  Indemnifying
Party  hereunder  is not made by the due date for  payment  thereof,  then  that
payment shall carry interest  (calculated on a daily basis) from the due date of
payment  until  actual  payment  (as well  after  judgement  as  before)  at the
Amsterdam Inter Bank Offered Rate plus 2%.

                                    ARTICLE X
                          STOCKHOLDERS' REPRESENTATIVE

        10.1Appointment;  Acceptance.  By executing this Agreement,  each of the
SQL  Stockholders   hereby  irrevocably   constitutes  and  appoints  Residentie
Participaties III CV and its successors,  acting as hereinafter provided, as his
attorney-in-fact  and agent in his name,  place and stead in connection with the
transactions   and   agreements   contemplated   by  this  Agreement  (the  "SQL
Stockholders'  Representative"),  and  acknowledges  that  such  appointment  is
coupled with an interest.  By executing and delivering this  Agreement,  Holland
Venture  Holdings II CV hereby (i) accepts its appointment and  authorization to
act as the SQL Stockholders'  Representative,  as attorney-in-fact  and agent on
behalf of the SQL  Stockholders  in accordance with the terms of this Agreement,
and (ii) agrees to perform its  obligations  under,  and otherwise  comply with,
this Article XI.

        10.2Authority.

            (a)   Each of the SQL Stockholders authorizes the SQL
Stockholders' Representative:

            (i) to  dispute  or to  refrain  from  disputing  any claim  made by
Datastream  under  this  Agreement  and the other  agreements,  instruments  and
documents to be delivered  by or on behalf of the SQL  Stockholders  pursuant to
this Agreement;

            (ii) to negotiate and  compromise any dispute which may arise under,
and to  exercise  or  refrain  from  exercising  remedies  available  under this
Agreement and the other agreements, instruments and documents to be delivered by
or on behalf of the SQL Stockholders  pursuant to this Agreement and to sign any
releases or other documents with respect to such dispute or remedy;

            (iii) to determine the location of the  arbitration  of any claim by
the SQL  Stockholders  in  accordance  with Section 11.9 hereof and to otherwise
take action on behalf of the SQL Stockholders pursuant to Section 11.9;

            (iv) to give  such  instructions  and to do such  other  things  and
refrain  from doing such other  things as the SQL  Stockholders'  Representative
shall  deem  necessary  or  appropriate  to  carry  out the  provisions  of this
Agreement and the other agreements, instruments and documents to be delivered by
or on behalf of the SQL Stockholders pursuant to this Agreement; and

            (v)  to  enter  into   amendments  of  this  Agreement  and  execute
instruments  in writing to reflect  such  amendments  pursuant  to Section  12.1
hereof.

            (b) Each of the SQL Stockholders  agrees to be irrevocably  bound by
all agreements and  determinations  made by and documents executed and delivered
by the SQL  Stockholders'  Representative  under  this  Agreement  and the other
agreements, instruments and documents to be delivered by or on behalf of the SQL
Stockholders pursuant to this Agreement.

        10.3Actions.  Each of the SQL Stockholders hereby expressly acknowledges
and agrees that the SQL Stockholders' Representative is authorized to act on his
behalf.  Notwithstanding any dispute or disagreement among the SQL Stockholders,
Datastream  and any other  Person or entity shall be entitled to rely on any and
all action taken by the SQL  Stockholders'  Representative  under this Agreement
and the other  agreements,  instruments  and  documents to be delivered by or on
behalf of the SQL Stockholders  pursuant to this Agreement without any liability
to, or obligation to inquire of, any of the SQL Stockholders. Datastream and any
other  Person  or  entity  are  hereby  expressly  authorized  to  rely  on  the
genuineness of the signature of the SQL Stockholders'  Representative  and, upon
receipt of any writing which  reasonably  appears to have been signed by the SQL
Stockholders' Representative,  Datastream and any other Person or entity may act
upon the same without any further duty of inquiry as to the  genuineness  of the
writing.

        10.4Successors. If Residentie Participaties III CV ceases to function in
its capacity as the SQL Stockholders'  Representative for any reason whatsoever,
then a majority  of the SQL  Stockholders  may  appoint a  successor;  provided,
however,  that if for any reason no successor has been appointed pursuant to the
foregoing within thirty (30) days, then Residentie Participaties III CV shall be
obligated  to  nominate  a  successor  acceptable  to  a  majority  of  the  SQL
Stockholders and to Datastream or to petition a court of competent  jurisdiction
for appointment of a successor.

        10.5Effectiveness.   The   authorizations   of  the  SQL   Stockholders'
Representative  shall be effective until his rights and  obligations  under this
Agreement  terminate by virtue of the  termination of any and all obligations of
the SQL  Stockholders to Datastream  under this Agreement.  The SQL Stockholders
may not, after the date hereof, terminate the authority of the SQL Stockholders'
Representative to act on their behalf  hereunder.  Any such action shall be void
and of no force or effect.

        10.6Indemnification.  The SQL Stockholders  hereby jointly and severally
agree to indemnify and hold the SQL  Stockholders'  Representative  harmless for
any and all liability, loss, cost, damage or expense (including attorneys' fees)
incurred  or suffered as a result of the  performance  of his duties  under this
Agreement or failure to perform any such duty, except any liability, loss, cost,
damage or expense  suffered  or  incurred  as a result of the SQL  Stockholders'
Representative's gross negligence or wilful misconduct.

                                   ARTICLE XI
                               GENERAL PROVISIONS

        11.1Amendment. This Agreement may not be amended except by an instrument
in writing signed on behalf of each of the parties  hereto,  except that the SQL
Stockholders'  Representative  may  execute  amendments  on  behalf  of the  SQL
Stockholders pursuant to Section 10.2(a)(v) hereof.

        11.2Extension;  Waiver.  At any time  prior  to the  Closing  Date,  the
parties  (through a duly  authorized  officer in the case of a corporate  party)
may:

            (a)   extend the time for the performance of any of the
obligations or other acts of the other parties;

            (b)   waive any inaccuracies in the representations and
warranties contained in this Agreement or in any document delivered
pursuant to this Agreement; and

            (c)   waive compliance with any of the agreements or
conditions contained in this Agreement.

        Any  agreement  on the part of a party to any such  extension  or waiver
shall be valid only if set forth in an instrument in writing signed on behalf of
each of the parties.

        11.3Entire  Agreement.  This  Agreement  (including  the  Schedules  and
Exhibits  hereto) and the other documents  referenced  herein contain the entire
agreement  between the parties  with  respect to the subject  matter  hereof and
supersede all prior arrangements and understandings, both written and oral, with
respect thereto.

        11.4Severability.  It is the desire and intent of the  parties  that the
provisions of this Agreement be enforced to the fullest extent permissible under
the law and public policies applied in each jurisdiction in which enforcement is
sought.  Accordingly, in the event that any provision of this Agreement would be
held in any jurisdiction to be invalid,  prohibited,  or  unenforceable  for any
reason, such provision, as to such jurisdiction,  shall be ineffective,  without
invalidating  the  remaining  provisions  of this  Agreement  or  affecting  the
validity  or  enforceability  of  such  provision  in  any  other  jurisdiction.
Notwithstanding the foregoing, if such provision could be more narrowly drawn so
as not to be invalid,  prohibited  or  unenforceable  in such  jurisdiction,  it
shall, as to such jurisdiction,  be so narrowly drawn,  without invalidating the
remaining   provisions   of  this   Agreement  or  affecting   the  validity  or
enforceability of such provision in any other jurisdiction.

        11.5Notices.  All  notices  and other  communications  pursuant  to this
Agreement  shall be in writing and shall be deemed to be sufficient if contained
in a  written  instrument  and shall be deemed  given if  delivered  personally,
telecopied, sent by  internationally-recognized,  overnight courier or mailed by
registered or certified mail (return receipt requested), postage prepaid, to the
parties at the  following  addresses  (or at such other  address  for a party as
shall be specified by like notice):

               (a)     If to Datastream or the Subsidiary, to:

                        Datastream Systems, Inc.
                        50 Datastream Plaza
                        Greenville, South Carolina 29605
                        Attention: Larry G. Blackwell, Ph.D., P.E.
                        Telephone: (864) 422-5215
                        Telecopier: (864) 422-5000

                       with a copy to:

                        Hunton & Williams
                        600 Peachtree Street, N.E.
                        Suite 4100
                        Atlanta, Georgia 30308-2216
                        Attention: J. Stephen Hufford, Esq.
                        Telephone: (404) 888-4045
                        Telecopier: (404) 888-4190

                  (b)  If to SQL, to:

                        SQL Systems B.V.
                        Marconistraat 16
                        P.O. Box 11344
                        3004 E.H. Rotterdam
                        Holland
                        Attention: Dr. Peter A.G. Huisman

                       with a copy to:

                        Trenite Van Doorne
                        P.O. Box 17207
                        2502 CE The Hague
                        Holland
                        Attention: Dr. Bas Steins Bisschop

               (c)       If to the SQL Shareholders, to the SQL
               Stockholders' Representative:

                         Residentie Participaties III CV
                         P.O. Box 1345
                         7301 BN Apeldoorn
                         Holland

                       with a copy to:

                        Trenite Van Doorne
                        P.O. Box 17207
                        2502 CE The Hague
                        Holland
                        Attention: Dr. Bas Steins Bisschop

               (d)      all such notices and other communications shall
be deemed to have been received
                  (i)   in the case of personal delivery, on the date of
such delivery,

                  (ii) in the case of a telecopy,  when the party  sending  such
      telecopy shall have confirmed sending the communication by telephone to an
      officer-level representative of the addressee,

                  (iii) in the case of delivery by nationally-recognized,
      overnight courier, on the Business Day following dispatch, and

                  (iv)  in the case of mailing, on the third Business Day
      following such mailing.

        11.6Headings. The headings contained in this Agreement are for reference
purposes only and shall not affect in any way the meaning or  interpretation  of
this Agreement.

        11.7Counterparts.  This  Agreement  may  be  executed  in  one  or  more
counterparts,  all of which shall be considered  one and the same  agreement and
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other  parties,  it being  understood  that all
parties need not sign the same counterpart.

        11.8Benefits;  Assignment. This Agreement is not intended to confer upon
any Person other than the parties any rights or remedies hereunder and shall not
be  assigned by  operation  of law or  otherwise;  provided,  however,  that (i)
Datastream  may  assign  all  or any  portion  of the  rights  hereunder  to any
wholly-owned subsidiary of Datastream,  and SQL shall, upon request, execute any
amendment to the Transaction Documents necessary to provide the benefits of this
Agreement to any such  assignee  and (ii)  Residentie  Participaties  III CV and
Holland Venture  Holdings II CV may consolidate  their  respective  holdings for
purposes of receiving their share of the Total Consideration, but without in any
way substantively affecting Datastream's rights hereunder, and Datastream shall,
upon request,  execute any amendment to the Transaction  Documents  necessary in
connection with any such consolidation.

        11.9Governing Law; Arbitration.  This Agreement shall be governed by and
construed  in  accordance  with the laws of The  Netherlands  as  applicable  to
contracts  made and to be performed  therein.  All disputes  between the parties
hereto arising under or in connection with this Agreement or further  agreements
resulting from this Agreement including all disputed claims for breach by either
party of any representation, warranty, undertaking or covenant on its part under
this Agreement, shall be resolved by arbitration in accordance with the rules of
the United  Nations  Commission on  International  Trade Law,  provided that the
parties  shall have the right to settle any such dispute in summary  proceedings
and the right to obtain seizure, and provided, further, that it is the desire of
the parties to this Agreement such  arbitrators  undertake their best efforts to
complete any such  arbitration  within one year of the date such  arbitration is
commenced.  The arbitration  proceedings  shall only be conducted in the English
language and all pleadings and papers (other than original  exhibits)  submitted
in  connection  with such  arbitration  shall only be  submitted  in the English
language.  The  place of  arbitration  shall be New  York,  New York or  London,
England,  at the  discretion  of the party  initiating  a Claim  hereunder.  The
arbitration  panel shall consist of three members,  or, subject to the agreement
of the  parties,  one  member.  If the panel is to consist of one  member,  such
member  shall be chosen by  agreement  of the parties  within 30 days  following
initiation of the arbitration proceedings or, if the parties are unable to agree
within that time, by the United Nations Commission on International Trade Law in
a manner consistent with its rules. If the panel is to consist of three members,
the first two  members  shall be chosen  by each  party and such  members  shall
choose  the  third  member  within  30  days  following  the  initiation  of the
arbitration proceedings. For purposes of this Section 11.9, the term "party," as
used herein shall, in appropriate  circumstances,  be deemed to mean Datastream,
on the one hand, and the SQL  Stockholders  (collectively  and as represented by
the SQL Stockholders' Representative), on the other hand.

        11.10 Agent for Service.  Each of the SQL  Stockholders  authorizes  and
appoints the SQL Stockholders' Representative as his agent to receive service of
process  for  any  action  or  proceeding  arising  out of or  relating  to this
Agreement.

        11.11  Construction.  The language used in this Agreement will be deemed
to be the language  chosen by the parties to express  their mutual intent and no
rule of strict construction shall be applied against any party. Any reference to
any  federal,  state,  local or foreign  statute or law shall be deemed  also to
refer to all rules and regulations  promulgated  thereunder,  unless the context
requires otherwise. Nothing in the Disclosure Letter shall be deemed adequate to
disclose an exception to a  representation  or warranty  made herein  unless the
Disclosure  Letter  identifies the exception with  particularity,  describes the
relevant  facts in detail and makes  specific  reference  to the Section of this
Agreement from which exception is taken.  Without limiting the generality of the
foregoing, the mere listing (or inclusion of a copy) of a document or other item
shall not be deemed  adequate to disclose an  exception to a  representation  or
warranty made herein (unless the  representation  or warranty has to do with the
existence of the document or other items  itself).  The parties intend that each
representation,  warranty and covenant  contained  herein shall have independent
significance. If any party has breached any representation, warranty or covenant
contained   herein  in  any  respect,   the  fact  that  there  exists   another
representation,  warranty  or  covenant  relating  to the  same  subject  matter
(regardless  of the  relative  levels  of  specificity)  which the party has not
breached shall not detract from or mitigate the fact that the party is in breach
of the first representation, warranty or covenant.



                     [Signatures appear on following pages.]






<PAGE>


         IN WITNESS WHEREOF,  the parties hereto have signed or have caused this
Agreement to be signed by their respective duly authorized  officers,  all as of
the date first written above.

DATASTREAM:                                     DATASTREAM SYSTEMS, INC.

                                              By:
                                                 ---------------------------

                                              Title: _______________________


                                              [CORPORATE SEAL]




SQL:                                            SQL GROUP, B.V.

                                             By:____________________________

                                             Title:
                                                     -----------------------







                     [Signatures continued on following pages.]


<PAGE>


- -------------------------------           -----------------------------------
by:  Residentie Participaties III CV      by:  Holland Venture Holdings II


- --------------------------------          -----------------------------------
by:  P.A.G. Huisman                       by:  Spouse


- --------------------------------          -----------------------------------
by:  H.P. de Gruyter                      by:  Spouse


- --------------------------------          -----------------------------------
by:  Parnib BV                            by:  V.W.J. Mom


- --------------------------------          -----------------------------------
by:  M. Robijns                           by:  Stichting Marconi


- --------------------------------
by:  SQL Group BV



Accepted by:
SQL STOCKHOLDERS'                         ------------------------------------
REPRESENTATIVE:                           by:  Residentie Participaties
                                                  III CV


















<PAGE>


                                      SCHEDULE 2.2

                             (To be completed at Closing.)




                                              Total              Share of
                           Escrow        Consideration(2)        Indemnity
SQL Stockholder         Shares(1)        Stock     Cash($)       Obligation(3)

Residentie
   Participaties III CV  49,730         179,583   5,350,480      33.09%
P.A.G. Huisman           24,106          87,050   2,593,546      16.04
H.P. de Gruyter          24,106          87,050   2,593,546      16.04
V.W.J. Mom               24,106          87,050   2,593,546      16.04
Holland Venture
   Holdings II           16,960          61,172   1,822,557      11.27
Parnib BV                 8,486          30,643     912,981       5.66
M. Robijns                2,802          22,841      13,651       1.86
Stichting Marconi(4)          0          16,662     388,776          0
Stichting Marconi(5)          0          29,054     730,917          0
                        -------         -------   ---------      -----
                        150,276         601,105  17,000,000      100.0%
                        =======         =======  ==========      =====






(1)  Per Section 2.2(iii).
(2)  Per Section 1.51 and 2.2.
(3)  Per Section 9.2 and 9.7.
(4)  Acting for itself.
(5)  Acting on behalf of the Optionholders.

<PAGE>

EXHIBIT 4.1

                        ESCROW AGREEMENT


         THIS ESCROW  AGREEMENT  (this  "Agreement")  is made as of December 31,
1996,  by and among  Datastream  Systems,  Inc.,  a  corporation  organized  and
existing  under  the  laws  of  the  State  of  Delaware   ("Datastream"),   the
stockholders  of SQL Group,  B.V. listed on the signature pages hereto (the "SQL
Stockholders"), and Robert J.J. Lijdsman, a civil law notary with his offices in
Rotterdam, The Netherlands, as escrow agent (the "Escrow Agent").

                        RECITALS

         WHEREAS,  Datastream,  SQL Group,  B.V., a  corporation  organized  and
existing under the laws of The  Netherlands  ("SQL"),  and the SQL  Stockholders
have entered into that certain Share Purchase Agreement dated as of December 15,
1996 (the "Share Purchase  Agreement"),  providing for the acquisition of SQL by
Datastream  through the purchase of all of the capital stock of SQL  outstanding
on the Closing Date (the "Transaction");

         WHEREAS, pursuant to the Share Purchase Agreement, the SQL Stockholders
are entitled to receive, at the Effective Time of the Transaction,  an aggregate
of 751,381 shares of Datastream  Common Stock as a portion of the  consideration
for such Transaction;

         WHEREAS,  the Share Purchase  Agreement provides that 150,276 shares of
Datastream  Common Stock (the "Escrow  Shares") shall be delivered to the Escrow
Agent and shall be placed  and held in escrow  (the  "Escrow")  pursuant  to the
terms and conditions specified herein;

         WHEREAS,  the respective number of Escrow Shares being placed in Escrow
by each of the SQL  Stockholders  is set  forth  on  Schedule  2.2 to the  Share
Purchase Agreement;

         WHEREAS,  the  execution and delivery by the SQL  Stockholders  of this
Agreement is a condition  precedent to  Datastream's  obligations  to effect the
Transaction under the Share Purchase Agreement; and

         WHEREAS,  Robert  J.J.  Lijdsman  is willing to accept  delivery of the
Escrow  Shares from the SQL  Stockholders  and to hold and  release  such Escrow
Shares in accordance with the terms and conditions specified herein;

         NOW,  THEREFORE,  in consideration of the premises,  the agreements set
forth  herein  and  other  good and  valuable  consideration,  the  receipt  and
sufficiency  of which are  hereby  acknowledged,  the  parties  hereto  agree as
follows:



<PAGE>



                       TERMS AND CONDITIONS

1.       Definitions.

         (a) Capitalized  terms used but not otherwise defined herein shall have
the meanings ascribed to such terms in the Share Purchase Agreement.

         (b) As used  herein,  the term "Escrow  Shares"  includes any shares of
Datastream  Common Stock issued by  Datastream  during the term of the Escrow in
payment  of stock  dividends  or stock  splits  with  respect  to the  shares of
Datastream  Common  Stock  deposited  pursuant to this  Agreement,  but does not
include any shares released from the Escrow pursuant to the provisions hereof.

2.       Appointment of Escrow Agent.

         Datastream and the SQL Stockholders hereby designate and appoint Robert
J.J.  Lijdsman to serve as escrow  agent  hereunder,  and Robert  J.J.  Lijdsman
hereby accepts such designation and appointment  upon the terms,  conditions and
provisions of this Agreement.

3.       Deposit with Escrow Agent.

         At the  Closing,  each SQL  Stockholder  will  deposit for  safekeeping
("overdracht  ten  titel  van   bewaarrening")   with  the  Escrow  Agent  stock
certificates representing the Escrow Shares, together with a duly executed power
of attorney  substantially  in the form attached hereto as Exhibit B (the "Power
of  Attorney"),   appointing   the  Escrow  Agent  as  such  SQL   Stockholder's
attorney-in-fact  for the purpose of executing and  delivering  the stock powers
and  instructions  necessary to effect the  distributions  contemplated  by this
Agreement. The SQL Stockholders will allow the Escrow Shares to remain in Escrow
with the Escrow Agent and will not withdraw or attempt to withdraw the same from
the Escrow except as herein provided.

4.       Escrow Shares; Voting Rights and Cash Dividends.

         Upon receipt of the Escrow Shares, the Escrow Agent shall hold the same
in accordance  with the terms hereof.  The Escrow Shares shall be held in Escrow
until  delivered to the SQL  Stockholders,  Datastream  or both  pursuant to the
terms  hereof.  For so long as the Escrow Agent is acting in such  capacity with
respect to Escrow Shares held hereunder,  the Escrow Agent hereby gives each SQL
Stockholder a power of attorney  giving each SQL  Stockholder  the sole right to
vote or direct the voting of his Escrow Shares and the right to receive all cash
dividends declared by the Company with respect thereto.


                                                     - 2 -

<PAGE>



5.       Purpose of Escrow.

         The  Escrow  is  being  established  for the  purpose  of  providing  a
non-exclusive fund for recovery by Datastream, subject to the terms of the Share
Purchase Agreement, for any (i) SQL Expenses not paid as of the Closing Date and
(ii) any Liability  incurred by Datastream or SQL after the Effective  Time as a
result of any breach of a  representation  or  warranty  or other  breach of the
Share  Purchase  Agreement  by the  SQL  Stockholders  in  connection  with  the
Transaction or in connection with the delivery of any  certificates,  agreements
or other  documents  required  to be  delivered  under  the  terms of the  Share
Purchase  Agreement  (except for such  breaches  specifically  disclosed  in the
Disclosure Letter).

6.       Valuation of Escrow Shares.

         (a)  For  the   purposes  of  this   Agreement   and  all  notices  and
distributions  contemplated hereby, each of the Escrow Shares shall have a value
equal to  $22.625,  subject to  adjustment  for stock  splits or  reverse  stock
splits,  if any, declared by Datastream during the term of the Escrow (the stock
price as so adjusted shall be referred to herein as the "Stock Value").

         (b) The number of Escrow  Shares to be retained by the Escrow  Agent in
connection  with a Claim against the Escrow or released to Datastream in payment
of a Claim  against the Escrow shall be determined by dividing the dollar amount
of such Claim by the Stock Value,  and  rounding the number so obtained  down to
the nearest whole number.

         (c) No fractional  share shall be issued or released in connection with
the payment of a Claim against the Escrow and the amount of any such Claim as to
which a fractional  share would otherwise be disbursed,  shall be disregarded by
the Escrow Agent.

7.       Retention of Escrow Shares.

         Subject to the  provisions of Section 8 of this  Agreement,  the Escrow
Agent shall hold all Escrow Shares  deposited with it pending the receipt by the
Escrow Agent from time to time of:

         (a) One or more written notices of a Claim against the Escrow in the 
form specified in Section 16(b) of this Agreement (each a "Notice of Claim");

         (b) One or more written  notices of the  settlement of a disputed Claim
against  the Escrow in the form  specified  in Section  16(c) of this  Agreement
(each a "Notice of Settlement"); or

         (c) An arbitration decision directing the release of some or all of the
Escrow  Shares  from an  arbitrator  chosen  and acting in  accordance  with the
provisions of Section 11.9 of the Share Purchase Agreement (an "Order").

                                                     - 3 -

<PAGE>




8.       Claim Procedure.

         (a) In the event that the Escrow Agent  receives a Notice of Claim from
Datastream,  the Escrow Agent shall notify the SQL Stockholders'  Representative
of the receipt of such Notice of Claim within five (5) Business  Days by sending
a copy of the  Notice of Claim  marked to show the date of receipt by the Escrow
Agent to the SQL Stockholders'  Representative.  If the SQL Stockholders wish to
dispute the Claim against the Escrow  contained in the Notice of Claim,  the SQL
Stockholders'  Representative  shall send a notice to the Escrow  Agent that the
SQL  Stockholders  dispute the Claim against the Escrow in the form specified in
Section 16(d) of this Agreement (a "Notice of Dispute").  Such Notice of Dispute
must be received by the Escrow Agent within fifteen (15) Business Days after the
receipt by the Escrow Agent of the Notice of Claim.

         (b) If the  Escrow  Agent  receives  a Notice of  Dispute  from the SQL
Stockholders' Representative within fifteen (15) Business Days after the receipt
by the Escrow  Agent of a Notice of Claim,  the Escrow  Agent  shall not release
Escrow  Shares  subject to such Notice of Claim and Notice of Dispute  until the
Escrow Agent  receives a Notice of Settlement  or an Order  directing the Escrow
Agent to cause the delivery of all or a specified  portion of the Escrow  Shares
to the appropriate  party or parties.  Upon receipt of such Notice of Settlement
or Order, the Escrow Agent shall distribute, as soon as practicable,  the number
of Escrow Shares specified  therein in accordance with the directions  contained
therein and the provisions of Sections 6, 10 and 11 of this Agreement.

         (c) If the Escrow  Agent does not receive a Notice of Dispute  from the
SQL  Stockholders'  Representative  within  fifteen (15) Business Days after the
receipt by the Escrow Agent of a Notice of Claim, the Escrow Agent shall release
to Datastream,  as soon as practicable,  the number of Escrow Shares required to
pay the Claim specified in the Notice of Claim at the Stock Value (as determined
pursuant to Section 6 of this  Agreement) in accordance  with Section 10 of this
Agreement.

         (d) Notwithstanding the receipt of one or more Notices of Dispute,  the
Escrow Agent shall release the  appropriate  number of Escrow Shares required to
pay a Claim  specified  in a Notice of Claim for which no Notice of Dispute  has
been  timely  received  regardless  of  whether  such  release  would  cause the
remaining  number of Escrow  Shares to be less than the number of Escrow  Shares
then  subject to other  Notices  of Claim or  Notices of Dispute  that have been
timely received by the Escrow Agent.

         (e) The Escrow Agent shall release Escrow Shares from the Escrow Shares
registered  in each  SQL  Stockholder's  name pro  rata in  accordance  with the
percentages  set forth in the third column of Schedule 2.2 to the Share Purchase
Agreement.


                                                     - 4 -

<PAGE>



9.       Termination and Release of Escrow Shares.

         (a) This Agreement, except for the provisions in Sections 12, 13 and 15
relating to the performance,  liability and  indemnification of the Escrow Agent
and except as set forth in subsection (b) below, shall terminate on July 1, 1998
(the "Termination Date") unless the Escrow Agent shall have received:

                  (i) any Notice of Claim for which the  fifteen  (15)  Business
Day  period  for  filing  a  Notice  of  Dispute  shall  not  have  expired  (an
"Outstanding Notice of Claim"); or

                  (ii) any Notice of Claim for which a timely  Notice of Dispute
shall have been  received by the Escrow  Agent for which the Escrow  Agent shall
not have received a Notice of Settlement or an Order (an "Outstanding  Notice of
Dispute").

         (b) In the event that on the Termination Date the Escrow Agent shall be
in  possession of an  Outstanding  Notice of Claim or an  Outstanding  Notice of
Dispute,  this  Agreement  shall  remain in effect  and the Escrow  Agent  shall
release,  as soon as practicable,  to the SQL  Stockholders the number of Escrow
Shares  then held by the Escrow  Agent in excess of the number of Escrow  Shares
then subject to any Outstanding  Notice of Claim and any  Outstanding  Notice of
Dispute.  This Agreement shall thereafter  terminate at the time that the Escrow
Agent shall have released all of the Escrow Shares in accordance  with the terms
of this Agreement.

         (c) In the event that on the  Termination  Date the Escrow  Agent shall
not be in possession of an Outstanding  Notice of Claim or an Outstanding Notice
of Dispute, the Escrow Agent shall release, as soon as practical,  the number of
Escrow Shares then held to the SQL Stockholders.

10.      Manner of Release of Escrow Shares to Datastream.

         Whenever  the Escrow  Agent  determines  that it is required to release
some or all of the Escrow Shares to  Datastream,  the Escrow Agent shall deliver
the following items to First Union National Bank of North Carolina, the transfer
agent for the common stock of Datastream (the "Transfer Agent");

         (a)      Stock certificates representing the Escrow Shares;

         (b)      Copies of the Powers of Attorney delivered to the Escrow Agent
pursuant to Section 3 of this Agreement;

         (c)  Appropriate  stock powers signed by an  authorized  officer of the
Escrow Agent,  together with evidence of the authority of the officer  acting on
behalf of the Escrow Agent; and


                                                     - 5 -

<PAGE>



         (d)      Written instructions to the Transfer Agent to:

                  (i)  reissue a stock certificate registered in the name of
Datastream and representing the number of Escrow Shares to be released to 
Datastream and deliver the same to Datastream; and

                  (ii) reissue  stock  certificates,  registered in the names of
each of the SQL Stockholders  representing the balance of such SQL Stockholder's
Escrow Shares and deliver the same to the Escrow Agent.

11.      Manner of Release of the Escrow Shares to the SQL Stockholders.

         Whenever  the Escrow  Agent  determines  that it is required to release
some or all of the Escrow Shares to the SQL Stockholders, the Escrow Agent shall
deliver to the Transfer Agent:

         (a)      Stock certificates representing the Escrow Shares;

         (b)      Copies of the Powers of Attorney delivered to the Escrow Agent
pursuant toSection 3 of this Agreement;

         (c)      Appropriate stock powers signed by an authorized officer of 
the Escrow Agent, with evidence of the authority of the officer acting on behalf
of the Escrow Agent; and

         (d)      Written instructions to the Transfer Agent to:

                  (i) reissue stock certificates registered in the names of each
of the SQL Stockholders  representing the number of Escrow Shares to be released
to each SQL Stockholder in accordance with the percentages set forth in Schedule
2.2 to the Share Purchase Agreement;

                  (ii)     reissue stock certificates registered in the names of
each of the SQL Stockholders representing the balance of such SQL Stockholder's 
Escrow Shares; and

                  (iii) deliver the stock  certificates  representing the Escrow
Shares  to  be  released   to  the  SQL   Stockholders   to  the   Stockholder's
Representative  and deliver the stock  certificates  representing the balance of
each of the SQL Stockholder's Escrow Shares to the Escrow Agent.

12.      Agreement of Escrow Agent.

         The Escrow  Agent  hereby  agrees to receive the Escrow  Shares and the
Powers of Attorney,  to hold the same in Escrow in accordance  with the terms of
this Agreement and

                                                     - 6 -

<PAGE>



not permit any withdrawal thereof except under the terms of this Agreement.  The
Escrow Agent shall be responsible  only for the safekeeping of the Escrow Shares
and the  distribution  or delivery  thereof in accordance with the terms of this
Agreement.  The Escrow Agent shall not be responsible  for the  authenticity  or
accuracy of any  documents  or stock  certificates,  or the  sufficiency  of the
Escrow  Shares and the Powers of  Attorney  to make the  distributions  required
herein.

13.      Performance by Escrow Agent.

         The parties to this Agreement agree as follows:

         (a) In performing any of its duties under this  Agreement,  or upon the
claimed failure to perform its duties  hereunder,  the Escrow Agent shall not be
liable to any party for any damages, losses or expenses which may be incurred as
a result of the Escrow Agent so acting or failing to act,  except the failure by
the  Escrow  Agent to give  notice to the SQL  Stockholders'  Representative  of
receipt by the Escrow Agent of a Notice of Claim.

         (b) The Escrow  Agent  shall not be  responsible  for or be required to
enforce any of the terms or  conditions of the Share  Purchase  Agreement or any
other agreement by and among Datastream, SQL and the SQL Stockholders.

         (c) The Escrow Agent shall not be  responsible  or liable in any manner
whatsoever for the performance of or by Datastream, SQL and the SQL Stockholders
of their respective obligations under this Agreement, nor shall the Escrow Agent
be responsible  or liable in any manner  whatsoever for the failure of any third
party to honor any of the provisions of this Agreement.

         (d) The  parties  hereto  represent  to the Escrow  Agent that they are
authorized  to  enter  into  the  Escrow  Agreement  by  their  duly  authorized
representatives  and  that  the  Escrow  Agent  is  entitled  to  rely  on  this
representation without the need to confirm the authority of the representatives.

         (e) The duties and  obligations of the Escrow Agent shall be limited to
and determined solely by the express provisions of this Agreement and no implied
duties or  obligations  shall be read into this  Agreement  against  the  Escrow
Agent. The Escrow Agent is not bound by and is under no duty to inquire into the
terms or validity of any other agreements or documents, including any agreements
or  documents  which may be related to,  referred to in, or  deposited  with the
Escrow Agent in connection with this Agreement.

         (f) The  Escrow  Agent  shall be  entitled  to rely  upon and  shall be
protected in acting in reliance  upon any notice  submitted to it in  connection
with its duties under this Escrow Agreement in the appropriate form as set forth
in Section 16 of this  Agreement,  which the Escrow Agent in good faith believes
to have been signed or presented by the proper party or parties.

                                                     - 7 -

<PAGE>




         (g) The Escrow Agent shall be entitled to consult  with counsel of its
own  selection  and the opinion  of such  counsel  shall be full  and  complete
authorization and protection to the Escrow Agent in respect of any action taken
or omitted by the Escrow Agent  hereunder in good faith, and in accordance with
the opinion of such counsel.

         (h)The Escrow Agent shall have the right to resign at any time and for
any reason, and shall be discharged of its duties as Escrow Agent  hereunder by
giving written notice of its  resignation to the parties hereto at least twenty
(20) Business Days prior to the date  specified  for such  resignation  to take
effect. All obligations of the Escrow Agent hereunder shall cease and terminate
on the effective date of its resignation and its sole responsibility thereafter
shall be to deliver  the Escrow  Shares to First  Union  National Bank of North
Carolina,  together  with the Powers of  Attorney  previously  delivered to the
Escrow Agent pursuant to Section 3 hereof,  whereupon First Union National Bank
of North  Carolina  shall  assume all of the rights and  obligations of, and be
deemed to be for all purposes, the Escrow Agent hereunder.

         (i) If the Escrow Agent shall die or become  legally  disabled, then a
civil law notary from the firm of Loeff Claeys  Verbeke  shall be designated to
serve as a replacement Escrow Agent in his stead.

14.      Fees of Escrow Agent.

         For its services hereunder  (which shall include receipt and return or
release of the  Escrow Shares in the manner  contemplated  herein),  the Escrow
Agent  shall  receive such  compensation  as may be agreed upon with the Escrow
Agent, and Datastream, on the one hand, and the SQL  Stockholders  (jointly and
not severally), on the other hand, shall be equally responsible therefor.

15.      Indemnification.

         (a) Datastream,  SQL and the SQL  Stockholders  jointly and  severally
agree to indemnify and hold the Escrow Agent  harmless from and against any and
all liabilities, causes of action, claims, demands,  judgments,  damages, costs
and expenses(including  reasonable  attorneys fees and expenses) that may arise
out of or in connection with the Escrow Agent's good faith acceptance of or 
good faith performance of its duties and obligations under this Agreement.

         (b)The Escrow Agent shall be under no duty to institute any suit or to
take any remedial procedures under this Agreement or to enter any appearance or
in any way defend any suit in which it is made a  defendant hereunder  until it
shall be indemnified as provided above.

         (c) In the event that the Escrow  Agent shall be  uncertain  as to its
duties or rights hereunder,  or receive instructions with respect to the Escrow
Shares which, in its sole

                                                     - 8 -

<PAGE>



discretion, are in conflict  either with other  instructions  received by it or
with any provision of this  Agreement, the Escrow Agent shall have the absolute
right to suspend all further performance under this Escrow Agreement(except for
the safekeeping of the Escrow Shares) until the resolution of such  uncertainty
or conflicting  instructions  to the Escrow Agent's sole satisfaction  by final
judgment or a court of competent  jurisdiction, joint written instructions from
all of the other parties hereto, or otherwise.

        (d) In the event that any controversy arises between one or more of the
parties  hereto or any other party with respect to this Agreement or the Escrow
Shares,  the  Escrow  Agent  shall  not be  required  to determine  the  proper
disposition of such  controversy or the proper disposition of the Escrow Shares
and shall have the absolute  right, in its sole  discretion, to hold the Escrow
Shares subject to such dispute until it receives an Order directing the release
of some or all of the Escrow Shares.

16.      Instructions and Notices.

         (a) In executing and performing its duties hereunder, the Escrow Agent
shall  be  entitled  to  rely  upon  instructions  of  Datastream  and  the SQL
Stockholders'  Representative.  Any  notice,  payment,  demand, instruction  or
communication  required or permitted to be given by this  Agreement shall be in
writing  and shall be deemed to have been  sufficiency  given or served for all
purposes  on the date on which the same was sent if  transmitted  via confirmed
facsimile with a copy thereof sent by reputable,  guaranteed  delivery service,
shipping charges prepaid,  to the appropriate party at the facsimile number and
address stated below:

If to Datastream:                           Datastream Systems, Inc.
                                            50 Datastream Plaza
                                            Greenville, South Carolina 29067
                                            Attn: Larry G. Blackwell, Ph.D,P.E.
                                            Facsimile: (864) 422-5000


with a copy to:                             Hunton & Williams
                                            600 Peachtree Street, NE
                                            Suite 4100
                                            Atlanta, Georgia 30308
                                            Attn: J. Stephen Hufford, Esq.
                                            Facsimile: (404) 888-4190



                                                     - 9 -

<PAGE>



If to the SQL Stockholders'                 Residentie Participaties III CV
  Representative                            P.O. Box 1345
                                            7301 BN Apeldoorn
                                            Holland

with a copy to:                             Trenite Van Doorne
                                            Churchillplein 5
                                            P. O. Box 17207
                                            2502 CE, The Hague
                                            Holland
                                            Attn:  Bas Steins Bisshop
                                            Telephone: (31 70) 338-3131
                                            Facsimile: (31 70) 358-4798

If to the Escrow Agent:                     Robert J.J. Lijdsman
                                            Loeff Claeys Verbeke
                                            Weena 70
                                            Rotterdam, The Netherlands
                                            Telephone:  (31 10) 403-4777
                                            Facsimile:  (31 10) 403-4616

with a copy to:                             Mr. J. G. deGroot
                                            Facsimile:  (31 10) 414-9388

Any party hereto may change its address for purposes of notice by giving notice
of such change to the other parties hereto in the manner specified herein.

         (b) A Notice of Claim shall specify the amount of the Claim against the
Escrow, expressed in dollars,  the number of Escrow Shares  required to pay the
Claim determined in accordance with Section 6 of this Agreement, and a statement
describing  the nature and grounds of the Claim, specifying  the section of the
Share Purchase Agreement to which such Claim pertains (if applicable), setting
forth the aggregate  amount of all Claims for which Datastream is seeking or has
sought indemnification from the SQL Stockholders and demonstrating the amount of
such Claim that may be paid from the Escrow in accordance with the provisions of
Section  9.5 of the Share  Purchase  Agreement. Any  Notice  of Claim  shall be
prepared, executed and delivered to the Escrow Agent by Datastream.

         (c) A Notice of  Settlement  shall specify the Notice of Claim to which
it relates by indicating  the date of such Notice of Claim and the dollar amount
of the Claim  against  the  Escrow,  and shall  specify the Notice of Dispute to
which it relates by indicating the date of such Notice of Dispute. The Notice of
Settlement shall contain a brief  description of the resolution of the claim and
dispute and shall include instructions to the Escrow Agent specifying the number
of  Escrow  Shares  to be  released  and to which  party  the  shares  are to be
released. Each Notice of Settlement must be signed by both an authorized officer


                                                     - 10 -

<PAGE>



of Datastream and the SQL Stockholders'  Representative acting on behalf of the
SQL Stockholders.

         (d) A Notice of Dispute  shall  specify the Notice of Claim to which it
relates by indicating  the date of such Notice of Claim and the dollar amount of
the claim against the Escrow,  and shall also indicate in reasonable  detail the
basis for the  dispute  of the Notice of Claim.  The Notice of Dispute  shall be
executed  on  behalf  of  the  SQL   Stockholders   by  the  SQL   Stockholders'
Representative and delivered to the Escrow Agent.

         (e) Copies of all the notices  described  in the above  subsections  of
this  Section  16 shall  also be sent to each of the  persons  listed in Section
16(a) at the address listed therein.

17.      Governing Law.

         This  Agreement  shall be governed by and construed in accordance  with
the laws of The  Netherlands,  provided,  however,  that if First Union National
Bank of North  Carolina  shall assume the rights and  obligations  of the Escrow
Agent  hereunder  pursuant to Section 13(h) hereof,  the Agreement shall then be
governed by and construed in  accordance  with the laws of the State of Delaware
or the laws of such  jurisdiction  as shall be required by First Union  National
Bank of North Carolina.

18.      Submission to Arbitration.

         Datastream,  each of the SQL  Stockholders  and the Escrow Agent hereby
agree  that  all  disputes  between  the  parties  hereto  arising  under  or in
connection  with this  Agreement  shall be resolved by arbitration in accordance
with the provisions of Section 11.9 of the Share Purchase Agreement.

19.      Modification.

         No modification or amendment to this Agreement shall be valid unless it
is in writing and signed by all of the parties hereto.

20.      Headings.

         The headings in this Agreement are in tended to be for  convenience and
identification only and are in no way intended to describe, interpret, define or
limit the scope, extent or intent of this Agreement or any provision hereof.


                                                     - 11 -

<PAGE>



21.      Severability.

         Each  provision of this  Agreement is intended to be severable.  If any
section or  provision  is illegal or  invalid  for any reason  whatsoever,  such
illegality or  invalidity  shall not affect the validity or  enforcement  of the
remainder of this Agreement.

22.      Sole Agreement.

         This  Agreement  constitutes  the entire  understanding  of the parties
hereto with respect to the subject matter hereof.

23.      Counterparts.

         This Agreement and any amendment  hereto may be executed by the parties
in two or more  counterparts,  with the same effect as if all parties hereto had
signed the same  document.  All  counterparts  shall be  construed  as and shall
constitute one and the same agreement.













                   [Signatures appear on the following pages.]



                                                     - 12 -

<PAGE>



         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed and sealed as of the date first written above.

DATASTREAM:                           DATASTREAM SYSTEMS, INC.

                                      By: ___________________________

                                      Title: ________________________


                                                              [CORPORATE SEAL]





ESCROW AGENT:                         _______________________________
                                      Robert J.J. Lijdsman, Civil Law Notary





                                     [Signatures continue on following page.]

                                                     - 13 -

<PAGE>





by:  Residentie Participaties III CV         by:  Holland Venture Holdings II



by:  P.A.G. Huisman                          by:  Spouse



by:  H.P. de Gruyter                         by:  Spouse



by:  Parnib BV                               by:  V.W.J. Mom



by:  M. Robijns                              by:  Stichting Marconi



by:  SQL Group BV




Accepted by:
SQL STOCKHOLDERS'
REPRESENTATIVE:
                                            by:  Residentie Participaties III CV




                                                     - 14 -



<PAGE>
EXHIBIT 4.2


                        REGISTRATION RIGHTS AGREEMENT


         This  Registration  Rights  Agreement (this  "Agreement") is made as of
this  31st day of  December,  1996 by and  among  Datastream  Systems,  Inc.,  a
corporation  organized  and  existing  under the laws of the  State of  Delaware
("Datastream" or the "Company"),  the stockholders of SQL Group,  B.V. listed on
the  signature  pages  hereto  (individually,  each  an  "SQL  Stockholder"  and
collectively, the "SQL Stockholders") and Residentie Participaties III CV in its
capacity as the "SQL Stockholders' Representative."


                        W I T N E S S E T H:

         WHEREAS,  the Company,  SQL Group,  B.V., a  corporation  organized and
existing under the laws of The  Netherlands  ("SQL"),  and the SQL  Stockholders
have entered into that certain Share Purchase Agreement dated as of December 15,
1996 providing for the acquisition of SQL by Datastream  through the purchase of
all of the  outstanding  capital stock of SQL (such  acquisition  is hereinafter
referred to as the "Transaction");

         WHEREAS,  upon  consummation of the  Transaction,  the SQL Stockholders
will own an aggregate of 751,381 shares of the Common Stock,  $.01 par value per
share (the "Common  Stock"),  of Datastream that they received as  consideration
for the Transaction; and

         WHEREAS,  in connection with the Transaction,  Datastream has agreed to
grant to the SQL  Stockholders  certain rights with respect to the  registration
under the  Securities  Act of 1933, as amended (the  "Securities  Act"),  of the
shares of Datastream  Common Stock received as consideration for the Transaction
and the  execution  and delivery of this  Agreement by Datastream is a condition
precedent  to  the  obligations  of  the  SQL  Stockholders  to  consummate  the
Transaction under the Share Purchase Agreement;

         NOW THEREFORE,  in consideration of the mutual covenants and agreements
contained herein, the parties hereto agree as follows:

         1.       Definitions.

                  (a) The term "affiliate"  means a person or entity directly or
indirectly,  controlled  by,  controlling  or under common  control with another
person or entity.

                  (b) The terms  "register,"  "registered,"  and  "registration"
refer  to a  registration  effected  by  preparing  and  filing  a  registration
statement under the Securities Act with the SEC and the automatic  effectiveness
or the declaration or order of effectiveness of such registration statement.



<PAGE>



                  (c) The term "Registrable  Securities" means the shares of the
Common  Stock of  Datastream  issued as  consideration  in the  Transaction  and
beneficially  owned by any SQL Stockholder,  but shall not include any shares of
Common Stock which have been sold or distributed to the public  pursuant to Rule
144 promulgated  under the Securities Act or that are held in escrow pursuant to
that certain  Escrow  Agreement of even date herewith for so long as such shares
remain in escrow.

                  (d) The term "SEC" means Securities and Exchange Commission.


         2.  Piggyback  Registration  Rights.  If  the  Company  proposes  or is
required to register  any shares of its Common Stock or  securities  convertible
into shares of its Common Stock under the Securities Act in connection  with the
public  offering  of such  securities  (other  than a  registration  on Form S-3
relating solely to the sale of securities to participants in a Company  dividend
reinvestment  plan, or a registration on Form S-8 relating solely to the sale of
securities to participants  in a Company stock option or employee  benefit plan,
or a registration on Form S-4, or a registration on any form  promulgated by the
Securities and Exchange Commission as a successor to any such form), the Company
shall,  at each  such  time,  promptly  give  written  notice  of such  proposed
registration  to the SQL  Stockholders'  Representative.  The SQL  Stockholder's
Representative  shall notify each SQL Stockholder of such proposed  registration
within five (5) days of receiving such notice from the Company. Upon the written
request of any SQL Stockholder  received by the Company within 15 days after the
date of the notice of the  proposed  registration  by the  Company,  the Company
shall,  subject to the  provisions of Section 3, use its best efforts to include
in such  registration  all of the  Registrable  Securities  that  each  such SQL
Stockholder  has  requested  to be  registered.  The  Company  shall be under no
obligation to complete any offering of its  securities it proposes to make under
this  Section 2 and shall  incur no  liability  to any SQL  Stockholder  for its
failure to do so.

         3. Limitations on Piggyback Registration Rights. In connection with any
underwritten  public offering,  the Company shall not be required to include any
SQL Stockholder's  Registrable  Securities in such underwriting  unless such SQL
Stockholder  accepts the terms of the  underwriting  as agreed upon  between the
Company  and the  underwriters  selected by the  Company,  and then only in such
quantity,  if any, as will not, in the opinion of the  underwriters,  jeopardize
the success of such offering (including the amount of proceeds to the Company or
the price per share to the public).  With respect to any such  offering,  if the
managing  underwriter  for the offering  shall advise the Company that the total
amount of securities, including Registrable Securities, requested to be included
in such  offering,  exceeds the amount of  securities  that can be  successfully
offered, then the Company shall be required to include in the offering only that
number of such securities,  including Registrable Securities, which the managing
underwriter  determines  will not  jeopardize  the success of the offering.  The
securities to be included in such offering shall be apportioned as follows:  (i)
the Company shall have priority over all other selling stockholders, (ii) to the


                                                      -2-

<PAGE>



extent that the  securities  to be sold by the Company do not exhaust the number
of shares  determined by such  underwriter  able to be  successfully  sold,  the
number of shares that may be sold by Larry G. Blackwell,  John M. Sterling, III,
Reedy  River  Ventures,  other  stockholders  of  Datastream  having  applicable
registration rights and the SQL Stockholders shall be apportioned pro rata based
on the number of shares  requested  to be  included in the  offering;  provided,
however,  that  if  the  Board  of  Directors  of  Datastream  or  the  managing
underwriter  of the  offering  recommends  that  any  one or more  of  Larry  G.
Blackwell,  John M. Sterling, III or Reedy River Ventures not participate in the
offering or reduce the number of their  shares to be sold in the  offering  from
the number  determined on a pro rata basis, then the number of shares to be sold
by Larry G.  Blackwell,  John M. Sterling,  III or Reedy River Ventures shall be
reduced in accordance with the Board of Directors' or the managing underwriter's
recommendation  and the  remaining  number of shares to be sold in the  offering
shall be apportioned  among the  stockholders  of Datastream  having  applicable
registration  rights and SQL Stockholders pro rata based on the number of shares
such persons requested to be included in the offering.

         4. Obligations of the Company.  Whenever  required under this Agreement
to effect the registration of any Registrable Securities,  the Company shall, as
expeditiously  as  reasonably  possible,   prepare  and  file  with  the  SEC  a
registration  statement with respect to such Registrable  Securities and use its
best efforts to cause such registration statement to become effective and shall:

                  (a) Use its best efforts to keep such  registration  statement
effective  for up to three  months  unless the  distribution  of the  securities
registered thereunder has been earlier completed.

                  (b)  Prepare  and  file  with  the  SEC  such  amendments  and
supplements to such registration statement and the prospectus used in connection
with such  registration  statement,  and use its best efforts to cause each such
amendment to become effective, as may be necessary to comply with the provisions
of the Securities Act with respect to the disposition of all securities  covered
by such registration statement.

                  (c) Furnish to each of the SQL  Stockholders  participating in
such offering a reasonable number of copies of such registration statement, each
amendment and supplement  thereto,  the prospectus included in such registration
statement (including each preliminary prospectus), any documents incorporated by
reference into the  registration  statement and such other documents as they may
reasonably  request  in order  to  facilitate  the  disposition  of  Registrable
Securities owned by them.

                  (d) In the event of any underwritten  public  offering,  enter
into and perform its obligations under an underwriting  agreement,  in usual and
customary  form,  with  the  managing  underwriter  of such  offering.  Each SQL
Stockholder  participating in such underwritten public offering shall also enter
into and perform its obligations under such an


                                                      -3-

<PAGE>



agreement, including furnishing an opinion of counsel or entering into a lock-up
agreement relating to Registrable  Securities not included in such registration,
in each case as reasonably requested by the managing underwriter.

                  (e) Promptly notify each SQL Stockholder  holding  Registrable
Securities covered by such registration  statement at any time when a prospectus
relating  thereto is required to be delivered  under the Securities  Act, of the
happening  of any  event as a result of which the  prospectus  included  in such
registration  statement,  as then in effect,  includes an untrue  statement of a
material fact or omits to state a material fact required to be stated therein or
necessary  to make the  statement  therein  not  misleading  in the light of the
circumstances  then existing and promptly file such  amendments and  supplements
which may be required  pursuant to paragraph (b) of this Section 4 on account of
such event and use its best efforts to cause each such  amendment or  supplement
to become effective.

                  (f) Furnish, at the request of any SQL Stockholder  requesting
registration of its Registrable  Securities  pursuant to this Agreement,  on the
date that such Registrable Securities are delivered to the underwriters for sale
if such securities are being sold through  underwriters,  or, if such securities
are not  being  sold  through  underwriters  on the date  that the  registration
statement with respect to the securities becomes effective, an opinion, dated as
of such date, of the counsel  representing  the Company for the purposes of such
registration,  in form and substance as is customarily  given by company counsel
to the  underwriters  in any  underwritten  public  offering,  addressed  to the
underwriters,  if any, and to the SQL  Stockholders  requesting  registration of
Registrable Securities.

                  (g) Use its best efforts to cause the Common Stock to continue
to be  included  in  the  Nasdaq  Stock  Market,  Inc.  National  Market  System
("NASDAQ/NMS")  or, in the  alternative,  at the  option of the  Company,  to be
listed on a national securities exchange  (provided,  however,  that the Company
shall have no  obligation  to apply for the  listing  of its  Common  Stock on a
national securities exchange in addition to listing on the Nasdaq/NMS).

                  (h)  Provide  a  transfer  agent  and  registrar  for all such
Registrable  Securities not later than the effective  date of such  registration
statement.

                  (i)  Make  available  for  inspection  by any SQL  Stockholder
selling  Registrable  Securities  and any  attorney,  accountant  or other agent
retained by any such SQL Stockholder  all pertinent  financial and other records
and  documents  of the Company,  and cause the  Company's  officers,  directors,
employees  and  independent  accountants  to supply all  information  reasonably
requested by any such seller,  attorney,  accountant or agent in connection with
such  registration  statement  (in each case  subject to such  assurances  as to
confidentiality as are reasonably requested by the Company and its counsel).

                  (j)      Otherwise use its best efforts to comply with all 
applicable rules and regulations of the SEC, and make available to its security 
holders, as soon as reasonably


                                                      -4-

<PAGE>



practicable, an earnings statement covering the period of at least twelve months
beginning with the first day of the Company's first full calendar  quarter after
the effective date of the registration  statement which earnings statement shall
satisfy  the  provisions  of Section  11(a) of the  Securities  Act and Rule 158
thereunder.

         5.  Furnish  Information.  It shall  be a  condition  precedent  to the
obligations  of the Company to take any action  pursuant to this  Agreement that
the SQL Stockholders  requesting  registration of their  Registrable  Securities
shall  furnish to the  Company  such  information  regarding  themselves  or the
Registrable  Securities  held by them, and the intended method of disposition of
such Registrable Securities,  as shall be reasonably requested by the Company in
order to effect the registration of their Registrable Securities.

         6. Expenses.  All expenses incurred in connection with the registration
and filing of a registration  statement  pursuant to Section 4 hereof (including
all amendments or  supplements  thereto),  including,  without  limitation,  all
registration,  printing  and  accounting  fees,  and fees and  disbursements  of
counsel  for  the  Company,  shall  be  borne  by  the  Company,  provided  that
underwriting  discounts and commissions  relating to the Registrable  Securities
and the fees and disbursements of counsel for the selling SQL Stockholders shall
be borne  and paid on a  pro-rata  basis by the SQL  Stockholders  selling  such
Registrable Securities.

         7.       Indemnification.

                  In the event any  Registrable  Securities  are  included  in a
registration statement under this Agreement:

                  (a) To the fullest  extent  permitted by law, the Company will
and hereby does agree to indemnify and hold harmless each SQL  Stockholder,  the
officers, directors,  employees,  shareholders and partners, if any, of each SQL
Stockholder,  and each person, if any, who controls such SQL Stockholder  within
the meaning of the  Securities  Act or the Exchange Act of 1934, as amended (the
"Exchange Act"), against any losses, claims, expenses, damages or liabilities to
which such SQL  Stockholder  may become  subject under the  Securities  Act, the
Exchange  Act or other  federal  or state law or  common  law,  insofar  as such
losses, claims, damages, expenses or liabilities (or actions in respect thereof)
arise out of or are based upon any of the  following  statements,  omissions  or
violations (each a "Violation"):

                  (i) any untrue  statement  or alleged  untrue  statement  of a
         material fact contained in such registration  statement  (including any
         prospectus or preliminary prospectus included therein), or the omission
         or alleged  omission to state  therein a material  fact  required to be
         stated  therein  or  necessary  to  make  the  statements  therein  not
         misleading, unless such untrue statement or alleged untrue statement or
         omission  or  alleged  omission  was  contained  in or  omitted  from a
         preliminary prospectus and


                                                      -5-

<PAGE>



         corrected  in a final or amended  prospectus  and such SQL  Stockholder
         failed to deliver a copy of the final or amended prospectus at or prior
         to the  confirmation of the sale of the  Registrable  Securities to the
         person or persons asserting any such loss,  claim,  damage or liability
         in the case where such delivery is required by the Securities Act, or

                  (ii) any other  violation by the Company of the Securities Act
         or any other  securities  law,  or any rule or  regulation  promulgated
         thereunder.

The  Company  will  reimburse  each  such SQL  Stockholder,  officer,  director,
partner,  agent,  employee or controlling person for any legal or other expenses
reasonably  incurred by them in connection with  investigating  or defending any
such loss, claim, expense, damage, liability, or action. The indemnity agreement
contained in this Section 7(a) shall not apply to amounts paid in  settlement of
any loss,  claim,  damage,  liability,  or action if such settlement is effected
without the  consent of the Company  (which  consent  shall not be  unreasonably
withheld),  nor shall the Company be liable to any SQL Stockholder for any loss,
claim,  damage,  liability,  or action to the extent that it arises out of or is
based upon a Violation  which  occurs in reliance  upon and in  conformity  with
written information furnished by or on behalf of such SQL Stockholder,  officer,
director,  partner,  agent,  employee or controlling person furnished for use in
such registration statement.

                  (b) To the fullest  extent  permitted by law, each selling SQL
Stockholder,  severally and not jointly, will and hereby does indemnify and hold
harmless  the  Company,  each of its  directors,  each of its  officers who have
signed the registration statement,  each of its employees,  each person, if any,
who controls the Company  within the meaning of the  Securities  Act, each agent
and any  underwriter  for the Company and any stockholder of the Company selling
securities  pursuant to such  registration  statement and any of its  directors,
officers or partners or any person who controls  such  stockholder,  against any
losses, claims, damages, expenses or liabilities to which any of them may become
subject, under the Securities Act, the Exchange Act or other federal or state or
common law, insofar as such losses, claims, damages, expenses or liabilities (or
actions in respect  thereof)  arise out of or are based upon any  Violation,  in
each case to the extent (and only to the extent) that such  Violation  occurs in
reliance  upon and in  conformity  with written  information  furnished by or on
behalf of such SQL  Stockholder  for use in such  registration  statement  to be
filed by the Company;  and each such SQL  Stockholder  will,  severally  and not
jointly,  reimburse any legal or other expenses  reasonably  incurred by (x) the
Company or any such director,  officer,  employee,  agent, controlling person of
the Company,  or (y) the underwriter or controlling person thereof, or (z) other
stockholder  of the Company  selling  securities  pursuant to such  registration
statement or any officer,  director,  partner or  controlling  person thereof in
connection  with  investigating  or  defending  any such  loss,  claim,  damage,
expense,  liability or action. The indemnity agreement contained in this Section
7(b)  shall not apply to amounts  paid in  settlement  of any such loss,  claim,
damage,  liability or action if such settlement is effected  without the consent
of the SQL Stockholders (which consent shall be


                                                      -6-

<PAGE>



given by the SQL  Stockholder's  Representative  and shall  not be  unreasonably
withheld)  nor, in the case of a sale directly by the Company of its  securities
(including a sale of such  securities  through any  underwriter  retained by the
Company to engage in a distribution solely on behalf of the Company),  shall the
SQL  Stockholder  be  liable to the  Company  in any case in which  such  untrue
statement  or alleged  untrue  statement  or  omission or alleged  omission  was
contained  in a  preliminary  prospectus  and  corrected  in a final or  amended
prospectus, and the Company or any underwriter retained by the Company failed to
deliver  a  copy  of  the  final  or  amended  prospectus  at or  prior  to  the
confirmation  of the sale of the  securities to the person or persons  asserting
any such loss,  claim,  damage or liability  in any case where such  delivery is
required by the Securities Act;  provided,  however,  that in no event shall the
several liability of any SQL Stockholder for indemnification  under this Section
7(b)  exceed the  proceeds  received  by such SQL  Stockholder  from the sale of
Registrable Securities under the applicable registration statement.

                  (c) Each  indemnified  party or parties shall give  reasonably
prompt notice to each indemnifying  party or parties of any action or proceeding
commenced against it in respect of which indemnity may be sought hereunder,  but
failure so to notify an  indemnifying  party or parties  shall not relieve it or
them  from  any  liability  which  it or they  may  have  under  this  indemnity
agreement,  except  to the  extent  that the  indemnifying  party is  materially
prejudiced by such failure to give notice. If the indemnifying  party or parties
so  elects  within  a  reasonable  time  after  receipt  of  such  notice,   the
indemnifying  party  or  parties  may  assume  the  defense  of such  action  or
proceeding at such indemnifying  party's or parties' expense with counsel chosen
by the  indemnifying  party or parties  and  approved by the  indemnified  party
defendant in such action or proceeding, which approval shall not be unreasonably
withheld;  provided,  however,  that,  if  such  indemnified  party  or  parties
determine in good faith that a conflict of interest exists and that therefore it
is advisable for such indemnified party or parties to be represented by separate
counsel or that, upon advice of counsel,  there may be legal defenses  available
to it or them which are different from or in addition to those  available to the
indemnifying party, then the indemnifying party or parties shall not be entitled
to assume such defense and the indemnified party or parties shall be entitled to
separate  counsel  at  the  indemnifying  party's  or  parties'  expense.  If an
indemnifying  party or parties is not so  entitled to assume the defense of such
action or does not  assume  such  defense,  after  having  received  the  notice
referred to in the first sentence of this paragraph,  the indemnifying  party or
parties will pay the reasonable fees and expenses of counsel for the indemnified
party or parties.  Notwithstanding  the foregoing,  the indemnifying party shall
not be  obligated  to pay the  reasonable  fees and  expenses  of more  than one
counsel for the  indemnified  parties with  respect to any claim,  unless in the
reasonable judgment of counsel to any indemnified party,  expressed in a writing
delivered to the  indemnifying  party,  a conflict of interest may exist between
such  indemnified  party and any other  indemnified  party with  respect to such
claim,  in which  event the  indemnifying  party shall be  obligated  to pay the
reasonable fees and expenses of such additional counsel or counsels (which shall
be limited to one counsel  per  indemnified  party).  No  indemnifying  party or
parties will be liable for any settlement  effected  without the written consent
of such


                                                      -7-

<PAGE>



indemnifying party or parties, which consent shall not be unreasonably withheld.
If an indemnifying party is entitled to assume, and assumes, the defense of such
action or proceeding in accordance with this paragraph,  such indemnifying party
or parties shall not,  except as otherwise  provided in this  subsection (c), be
liable for any fees and expenses of counsel for the indemnified parties incurred
thereafter in connection with such action or proceeding.

                  (d) If the  indemnification  provided for in this Section 7 is
unavailable  to a party  that would have been an  indemnified  party  under this
Section 7 in  respect  of any claims  referred  to herein,  then each party that
would have been an indemnifying  party hereunder  shall, in lieu of indemnifying
such  indemnified  party,  contribute  to the  amount  paid or  payable  by such
indemnified  party  as a  result  of  such  claims  in  such  proportion  as  is
appropriate to reflect the relative fault of the  indemnifying  party or parties
on the one hand and such  indemnified  party on the other in connection with the
action,  statement or omission  which  resulted in such  claims,  as well as any
other relevant equitable considerations.  The relative fault shall be determined
by reference to, among other things,  whether the untrue or alleged  omission to
state a material fact relates to information  supplied by the indemnifying party
or such indemnified party and the parties' relative intent, knowledge, access to
information  and  opportunity  to correct or prevent such statement or omission.
Notwithstanding   the  foregoing   provisions  of  this  Section  7(d),  an  SQL
Stockholder  shall not, as an indemnifying  party, be required to contribute any
amount  in  excess  of (x) the  amount  by which  the  total  price at which the
Registrable  Securities sold by such SQL Stockholder  were offered to the public
exceeds (y) the amount of any damages which such SQL  Stockholder  has otherwise
been  required  to pay by  reason  of such  action,  untrue  or  alleged  untrue
statement or omission or alleged omission.  The Company and each SQL Stockholder
holding Registrable  Securities agree that it would not be just and equitable if
contribution  pursuant  to  this  Section  7(d)  were  determined  by  pro  rata
allocation or by any other method of  allocation  which does not take account of
the equitable  considerations referred to above in this Section 7(d). The amount
paid or payable by an  indemnified  party as a result of the claims  referred to
above in this Section 7(d) shall include any legal or other expenses  reasonably
incurred by such  indemnified  party in  connection  with the  investigation  or
defending any such action or claim.

                  (e)  Without  the prior  written  consent  of the  indemnified
party,  no  indemnifying  party shall consent to entry of judgment or enter into
any settlement  which does not include,  as an unconditional  term thereof,  the
giving by the claimant or plaintiff to such indemnified  party of a release from
all liability in respect of such claim.

                  (f) No person  guilty of fraudulent  misrepresentation  within
the  meaning  of  Section  11(f) of the  Securities  Act  shall be  entitled  to
contribution from any person who was not guilty of fraudulent  misrepresentation
within the meaning of such Section 11(f).



                                                      -8-

<PAGE>



         8.       Reports Under the Exchange Act.

                  With a view to making available to the SQL  Stockholders  the
benefits of Rule 144 promulgated under the Securities Act and any other rule or
regulation of the SEC that may at any time  permit an SQL  Stockholder  to sell
securities of the Company to the public without registration,and with a view to
making  it possible  for the  SQL  Stockholders  to  register  the  Registrable
Securities pursuant to a  registration  by the Company on Form S-3, the Company
agrees to use its best efforts:

                  (a)    to make and keep public information available,as those 
terms are defined in Rule 144;

                  (b)    to file with the SEC in a timely manner all reports and
other documents required of the Company under the Securities Act and Exchange 
Act; and

                  (c) to  furnish  to any SQL  Stockholder so long as such SQL
Stockholder owns any Registrable Securities forthwith upon request(i) a written
statement by the Company as to its compliance with the reporting requirements of
Rule 144, the Securities Act and the Exchange Act or as to its qualification as
a registrant whose securities may be resold pursuant to Form S-3,(ii) a copy of
the most recent annual or quarterly report of the Company and such other reports
and documents so filed by the Company,  and (iii) such other information as may
be  reasonably  requested  in  availing any  SQL  Stockholder  of any  rule  or
regulation of the SEC which permits the selling of any such securities  without
registration or pursuant to such form.

         9.       Lockup Agreement.

                  Each SQL Stockholder shall be obligated and hereby agrees not
to sell, loan, grant any option for the purchase of, or otherwise dispose of or
encumber (i) any shares of Registrable Securities subject to a lockup agreement
entered  into  pursuant  to Section  4(d) hereof  (except  as may be  permitted
thereunder) or (ii) without the prior written consent of the Company, more than
fifty percent (50%) of such SQL Stockholders' Registrable Securities during any
ninety (90) day period  until the first  anniversary of the date hereof  (other
than in  connection  with a  registration  by the Company hereunder  subject to
Section 3 hereof).

         10.      Transfer of Registration Rights.

                  The  registration  rights  of  the  SQL  Stockholders granted
pursuant to this Agreement may not be transferred other than by will or the laws
of descent and distribution or with the prior written consent of the Company.



                                                      -9-

<PAGE>



         11.      Miscellaneous.

                  11.1.  Notices.

                  All notices,  requests, demands and other communications which
are required to be or may be given under this Agreement  shall be in writing and
shall be deemed to have been duly given when sent if  transmitted  by  confirmed
facsimile with a copy thereof sent by reputable  guaranteed delivery service, to
the party to whom the same is so given or made:


         If to the Company, to:    Datastream Systems, Inc.
                                   50 Datastream Plaza
                                   Greenville, South Carolina 29605
                                   Attention: Larry G. Blackwell, Ph.D., P.E.
                                   Telephone: (864) 422-5215
                                   Facsimile: (864) 422-5000

                  with a copy to:  Hunton & Williams
                                   600 Peachtree Street, N.E.
                                   Suite 4100
                                   Atlanta, Georgia 30308-2216
                                   Attention:        J. Stephen Hufford, Esq.
                                   Telephone:         (404) 888-4045
                                   Facsimile:         (404) 888-4190

or to such other person at such other place as the Company shall designate to 
the Shareholders in writing; and

         If to an SQL Stockholder,  to the SQL  Stockholders' Representative at
the address set forth on the signature pages hereto.

                  With a copy to:  SQL Systems B.V.
                                   Marconistraat 16
                                   P.O. Box 11344
                                   3004 E.H. Rotterdam
                                   Holland
                                   Attention:        Dr. Peter A.G. Huisman
                                   Telephone: (31 10) 448-1710
                                   Facsimile: (31 10) 448-1701



                                                      -10-

<PAGE>



                  with a copy to:  Trenite Van Doorne
                                   Churchillplein 5
                                   P.O. Box 17207
                                   2502 CE, The Hague
                                   Holland
                                   Attention:        Dr. Bas Steins Bisschop
                                   Telephone:  (31 70) 338-3131
                                   Facsimile:  (31 70) 358-4798

                  11.2.  Entire Agreement.

                  This Agreement  constitutes the entire  agreement  between the
parties hereto and supersedes all prior agreements, representations, warranties,
statements, promises, and understandings,  whether written or oral, with respect
to the subject matter thereof,  and cannot be changed or terminated  orally.  No
party hereto  shall be bound by or charged with any written or oral  agreements,
representations,   warranties,   statements,  promises,  or  understandings  not
specifically set forth in this Agreement.

                  11.3.  Headings; Certain Terms.

                  The section and other headings contained in this Agreement are
for reference purposes only and shall not be deemed to be part of this Agreement
or to affect the meaning or interpretation of this Agreement.

                  11.4.  Governing Law.

                  This   Agreement   shall  be  governed  by  and  construed  in
accordance with the laws of the State of Delaware.

                  11.5.  Severability.

                  If any term or provision of this Agreement shall to any extent
be  invalid or  unenforceable,  the  remainder  of this  Agreement  shall not be
affected  thereby,  and each term and provision of this Agreement shall be valid
and enforceable to the fullest extent permitted by law.

                  11.6.  Termination of Agreement.

                  This Agreement shall terminate on the earliest to occur of (a)
the  termination  of the Share Purchase  Agreement in accordance  with its terms
prior to the  consummation  of the  Transaction and (b) the date as of which the
SQL Stockholders shall have sold all of their Registrable  Securities (through a
registered public offering or otherwise), (c) the second anniversary of the date
hereof or (d) the date as of which each SQL Stockholder is entitled to


                                                      -11-

<PAGE>



sell all remaining Registrable Securities held by such SQL Stockholder,  without
limitation as to volume, pursuant to Rule 144 under the Securities Act.

                  11.7.  Amendments and Waivers.

                  Except as otherwise  provided  herein,  the provisions of this
Agreement  may be amended or waived only upon the prior  written  consent of the
Company and the SQL Stockholders' Representative.

                  11.8.  Section References.

                  All  references  contained  in this  Agreement  to any section
number  are   references  to  sections  of  this  Agreement   unless   otherwise
specifically stated.

                  11.9.  Counterparts.

                  This Agreement may be executed in any number of  counterparts,
each of which, when executed, shall be deemed to be an original and all of which
together shall be deemed to be one and the same instrument.

                  11.10.  Binding Effect.

                  This Agreement  shall be binding on all successors and assigns
of the Company, whether by merger, reorganization, sale of assets or otherwise.


                  IN WITNESS  WHEREOF,  the  parties  hereto  have  signed  this
Agreement,  or have caused  this  Agreement  to be signed on their  behalf by an
officer or  representative  thereunder duly authorized,  on the respective dates
stated below.

                            DATASTREAM SYSTEMS, INC.


                                            By

                                            Name:

                                            Title:




                                     [Signatures continue on following page.]


                                                      -12-

<PAGE>





by:  Residentie Participaties III CV            by:  Holland Venture Holdings II



by:  P.A.G. Huisman                             by:  Spouse



by:  H.P. de Gruyter                            by:  Spouse



by:  Parnib BV                                  by:  V.W.J. Mom



by:  M. Robijns                                 by:  Stichting Marconi



by:  SQL Group BV




Accepted by:
SQL STOCKHOLDERS'
REPRESENTATIVE:
                                           by:  Residentie Participaties III CV

                                           Address:
                                                P.O. Box 1345
                                                7301 BN Apeldoorn
                                                Holland
                                           Telephone:
                                           Facsimile:


































                                                      -13-

<PAGE>



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