Exhibit 10.3


                           EMPLOYEE BENEFITS AGREEMENT


     This  EMPLOYEE  BENEFITS  AGREEMENT  is  dated  as of June  30,  1998  (the
"Agreement"),    between   COGNIZANT   CORPORATION,   a   Delaware   corporation
("Corporation")  and IMS  HEALTH  INCORPORATED,  a  Delaware  corporation  ("IMS
Health").

     WHEREAS,  the Board of Directors of Corporation  has determined  that it is
appropriate,  desirable  and in the best  interests  of the holders of shares of
common stock, par value $.01 per share, of Corporation (the "Corporation  Common
Stock") to take  certain  steps to  reorganize  Corporation's  Subsidiaries  (as
defined  herein) and  businesses  and then to  distribute  to the holders of the
Corporation  Common  Stock all the  outstanding  shares  of common  stock of IMS
Health (the "IMS Health Common Stock"); and

     WHEREAS,  Corporation  and IMS Health have  determined that it is necessary
and desirable to allocate and assign responsibility for certain employee benefit
matters in respect of such entities on and after the Effective  Time (as defined
herein).


     NOW,  THEREFORE,  in  consideration  of the mutual  promises and  covenants
contained herein, Corporation and IMS Health agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

     SECTION 1.1.  Definitions.  Capitalized  terms used in this Agreement shall
have the following meanings:

     "ACNielsen" shall mean ACNielsen Corporation, a Delaware corporation.

     "Action" shall mean any action, suit, arbitration,  inquiry,  proceeding or
investigation  by or before any court,  any  governmental or other regulatory or
administrative agency, body or commission or any arbitration tribunal.

     "Affiliate"  shall  mean,  when used with  respect to a  specified  person,
another person that controls,  is controlled by, or is under common control with
the person specified. As used herein,  "control" means the possession,  directly
or  indirectly,  of the power to direct or cause the direction of the management
and policies of such person,  whether through the ownership of voting securities
or other interests, by contract or otherwise.

     "Ancillary   Agreements"   shall  mean  all  of  the  written   agreements,
instruments,   assignments  or  other  written  arrangements  (other  than  this
Agreement and the  Distribution  Agreement)  entered into in connection with the
transactions  



                                                                               2


contemplated  by this  Agreement  and  the  Distribution  Agreement,  including,
without  limitation,  the  Conveyancing and Assumption  Instruments,  the Shared
Transaction Services Agreement,  the Tax Allocation Agreement and the Transition
Services Agreement.

     "Assets"  shall  have the  meaning  set  forth  in  Section  1.1(f)  of the
Distribution Agreement.

     "Board of  Directors"  shall  mean,  when used with  respect to a specified
corporation, the board of directors of the corporation so specified.

     "Business  Entity"  shall  mean  any  corporation,   partnership,   limited
liability company or other entity which may legally hold title to Assets.

     "COBRA" shall mean the Consolidated  Omnibus Budget  Reconciliation  Act of
1985, as amended,  and the  regulations  promulgated  thereunder,  including any
successor legislation.

     "Code" shall mean the Internal  Revenue Code of 1986,  as amended,  and the
regulations promulgated thereunder, including any successor legislation.

     "Conveyancing and Assumption  Instruments"  shall mean,  collectively,  the
various agreements,  instruments and other documents heretofore entered into and
to be  entered  into to effect the  transfer  of Assets  and the  assumption  of
Liabilities  in the  manner  contemplated  by  the  Distribution  Agreement,  or
otherwise  arising out of or relating to the  transactions  contemplated  in the
Distribution Agreement.

     "Cognizant" shall mean Cognizant Corporation, a Delaware corporation.

     "Corporate  Staff   Employees"  shall  mean  Corporation   Pre-Distribution
Employees who performed  administrative  functions generally for the Corporation
Group  prior  to the  Effective  Time  and who  were  based  at the  Corporation
headquarters  in  Westport,  CT,  aviation  department  in  Purchase,  NY or STS
department in Allentown, PA.

     "Corporation" shall mean Cognizant Corporation, a Delaware corporation.

     "Corporation  Committee" shall mean the Compensation and Benefits Committee
of the Board of Directors of Corporation.

     "Corporation Common Stock" shall have the meaning set forth in the recitals
hereto.



                                                                               3


     "Corporation   Disabled   Employees"   shall  mean  all  employees  of  the
Corporation  Group who are receiving  benefits under the  Corporation  Long-Term
Disability Plan as of the Effective Time, as in effect from time to time.

     "Corporation  Employee  Stock  Purchase Plan" shall mean the 1997 Cognizant
Corporation Employee Stock Purchase Plan, as in effect from time to time.

     "Corporation  Executive  Annual  Incentive  Plan" shall mean the  Cognizant
Corporation Executive Annual Incentive Plan, as in effect from time to time.

     "Corporation  Group" shall mean  Cognizant  Corporation  and each  Business
Entity that is a Subsidiary of Corporation,  except that Corporation Group shall
not include Walsh International Inc. or any of its Subsidiaries.

     "Corporation  Long-Term Disability Plan" shall mean The Cognizant Long Term
Disability Plan or any other long-term  disability plan sponsored by Corporation
or any Subsidiary of Corporation prior to the Effective Time.

     "Corporation LSARs" shall have the meaning set forth in Section 6.2 of this
Agreement.

     "Corporation  Nonqualified  Plans"  shall have the  meaning as set forth in
Section 4.1 of this Agreement.

     "Corporation  Nonqualified  Plan  Participants"  shall have the meaning set
forth in Section 4.1.

     "Corporation  Pension REP" shall mean the Cognizant Retirement Excess Plan,
as in effect from time to time.

     "Corporation   Post-Distribution   Employees"   shall  mean   persons  who,
immediately  after the Effective  Time,  are employed by the  Corporation  Group
(including  persons  who are  absent  from  work by reason of layoff or leave of
absence and inactive  employees  treated as such by agreement  therewith)  other
than IMS Health Transitional Employees.

     "Corporation  Pre-Distribution  Employees"  shall mean  persons who, at any
time prior to the Effective Time, were employed by the Corporation Group.

     "Corporation  Ratio" shall have the meaning set forth in Section  6.1(a) of
this Agreement.

     "Corporation  Restricted Stock" shall have the meaning set forth in Section
6.3 of this Agreement.

     "Corporation   Retirees"  shall  mean  persons  who  (i)  were  Corporation
Pre-Distribution  Employees,  (ii)  terminated  



                                                                               4


employment  from the  Corporation  Group  prior to the  Effective  Time or, with
respect to Corporate Staff  Employees,  terminated  employment  prior to or as a
result of the  Distribution,  (iii) are not IMS Health  Employees  or IMS Health
Transitional  Employees  after  the  Effective  Time and (iv)  would  have  been
Corporation  Post-Distribution  Employees had they remained employed,  after the
Distribution, by the same employer from which they terminated employment or were
Corporate Staff Employees; but shall not include any person on Schedule 1.1.

     "Corporation  Retirement Plan" shall mean the Cognizant Retirement Plan, as
in effect from time to time.

     "Corporation  Savings  BEP" shall mean the  Cognizant  Corporation  Savings
Benefit Equalization Plan, as in effect from time to time.

     "Corporation  Savings  Plan" shall mean the Cognizant  Corporation  Savings
Plan, as in effect from time to time.

     "Corporation  Stock Option" shall have the meaning set forth in Section 6.1
of this Agreement.

     "Corporation  Stock Option Plans" shall mean the 1996 Key Employees'  Stock
Incentive Plan, the 1996 Replacement Plan for Certain  Employees Holding The Dun
&  Bradstreet  Corporation  Equity-Based  Awards or any other stock  option plan
established by the Corporation prior to the Effective Time.

     "Corporation  SERP"  shall  mean  the  Cognizant  Corporation  Supplemental
Executive Retirement Plan, as in effect from time to time.

     "Corporation   Transition  Plans"  shall  mean  The  Cognizant  Corporation
Executive Transition Plan and The Cognizant Corporation Career Transition Plan.

     "D&B" shall mean The Dun & Bradstreet Corporation, a Delaware corporation.

     "Distribution"  shall mean the  distribution  on the  Distribution  Date to
holders of record of shares of Corporation  Common Stock as of the  Distribution
Record Date of the IMS Health Common Stock owned by  Corporation on the basis of
one IMS Health Common Share for each  outstanding  share of  Corporation  Common
Stock.

     "Distribution  Agreement"  shall mean the  Distribution  Agreement  between
Corporation and IMS Health, dated as of June 30, 1998.

     "Distribution Date" shall mean June 30, 1998.



                                                                               5


     "Distribution  Record  Date" shall mean such date as may be  determined  by
Corporation's Board of Directors as the record date for the Distribution.

     "Effective  Time" shall mean  immediately  prior to the midnight,  New York
time, ending the 24-hour period comprising June 30, 1998.

     "Employee Benefit Dispute" shall include any controversy,  dispute or claim
arising  out of, in  connection  with,  or in  relation  to the  interpretation,
performance,  nonperformance,  validity or breach of this Agreement or otherwise
arising  out of, or in any way  related to this  Agreement,  including,  without
limitation, any claim based on contract, tort, statute or constitution.

     "Employee  Benefit  Litigation  Liability"  shall mean,  with  respect to a
Business Entity, a Liability relating to a controversy, dispute or claim arising
out of, in connection  with or in relation to the  interpretation,  performance,
nonperformance,  validity or breach of an Employee Benefit Plan of such Business
Entity or  otherwise  arising  out of, or in any way  related  to such  Employee
Benefit Plan, including,  without limitation, any claim based on contract, tort,
statute or constitution.

     "Employee Benefit Plans" shall mean, with respect to a Business Entity, all
"employee  benefit  plans"  (within  the  meaning  of  Section  3(3) of  ERISA),
"multiemployer   plans"   (within  the  meaning  of  Section  3(37)  of  ERISA),
retirement,  pension,  savings,  profit-sharing,  welfare, stock purchase, stock
option, equity-based, severance, employment, change-in-control,  fringe benefit,
collective  bargaining,  bonus,  incentive,   deferred  compensation,   worker's
compensation  and  all  other  employee  benefit  plans,  agreements,  programs,
policies or other  arrangements  (including  any funding  mechanisms  therefor),
whether or not subject to ERISA,  whether  formal or informal,  oral or written,
legally binding or not, under which (i) any past,  present or future employee of
the  Business  Entity or its  Subsidiaries  has a right to benefits and (ii) the
Business Entity or its Subsidiaries has any Liability.

     "Employee  Benefit  Records" shall mean all agreements,  documents,  books,
records or files relating to the Employee  Benefit Plans of Corporation  and IMS
Health.

     "Employee  Benefit  Welfare  Plans" shall mean,  with respect to a Business
Entity,  all Employee  Benefit Plans that are "welfare plans" within the meaning
of Section 3(1) of ERISA.

     "Employer Stock" shall mean, after the Distribution Date, IMS Health Common
Stock credited to the account of an IMS Health Employee and  Corporation  Common
Stock credited to the account of a Corporation Post-Distribution Employee in the
pooled  



                                                                               6


stock fund of the respective  savings plan in which such employee  participates,
pursuant to Section 3.4.

     "ERISA" shall mean the Employee  Retirement Income Security Act of 1974, as
amended,  and the regulations  promulgated  thereunder,  including any successor
legislation.

     "Final IMS Health Retirement Plan Transfer Date" shall have the meaning set
forth in Section 2.2(d) of this Agreement.

     "IMS Health" shall mean IMS Health Incorporated, a Delaware corporation.

     "IMS Health  Committee" shall mean the Compensation and Benefits  Committee
of the Board of Directors of IMS Health.

     "IMS Health  Common Stock" shall have the meaning set forth in the recitals
hereto.

     "IMS Health Disabled  Employees" shall mean all employees of the IMS Health
Group  who are  receiving  benefits  or are in the  waiting  period  to  receive
benefits under the Corporation  Long-Term  Disability Plan immediately  prior to
the Effective Time.

     "IMS  Health  Employees"  shall mean  persons  who,  immediately  after the
Effective Time, are employed by the IMS Health Group (including  persons who are
absent from work by reason of layoff or leave of absence and inactive  employees
treated as such by agreement therewith).

     "IMS Health  Employee  Stock  Purchase  Plan" shall mean the Employee Stock
Purchase Plan to be adopted by IMS Health pursuant to Section 6.5.

     "IMS Health Group" shall mean IMS Health and each Business  Entity which is
contemplated  to remain or become a  Subsidiary  of IMS Health  pursuant  to the
Distribution Agreement.

     "IMS Health  Nonqualified  Plans" shall mean the  nonqualified  plans to be
adopted by IMS Health pursuant to Section 4.2.

     "IMS  Health  Nonqualified  Plan  Participants"  shall have the meaning set
forth in Section 4.2.

     "IMS Health Pension REP" shall mean the IMS Health  Retirement  Excess Plan
to be adopted by IMS Health pursuant to Section 4.2.

     "IMS Health  Ratio"  shall have the meaning set forth in Section  6.1(b) of
this Agreement.



                                                                               7


     "IMS  Health  Replacement  Plans"  shall mean the  replacement  plans to be
adopted by IMS Health pursuant to Section 6.1(b) of this Agreement.

     "IMS Health  Restricted  Stock" shall have the meaning set forth in Section
6.3 of this Agreement.

     "IMS  Health   Retirees"  shall  mean  persons  who  (i)  were  Corporation
Pre-Distribution Employees, (ii) terminated employment from the IMS Health Group
prior  to  the  Effective  Time  (iii)  are  not  Corporation  Post-Distribution
Employees after the Effective Time and (iv) would have been IMS Health Employees
had they remained  employed,  after the Distribution,  by the same employer from
which they terminated employment but shall not include Corporate Staff Employees
included in the definition of Corporation Retirees; and shall include any person
on Schedule 1.1.

     "IMS Health  Retirement  Plan" shall mean the  defined  benefit  plan to be
adopted by IMS Health pursuant to Section 2.2(a) of this Agreement.

     "IMS  Health  Retirement  Plan  Effective  Date" shall have the meaning set
forth in Section 2.2(a) of this Agreement.

     "IMS Health Retirement Plan Segregation Ratio" shall equal a fraction,  the
numerator  of which is the  Present  Value of the accrued  vested and  nonvested
benefits  (as  defined  in  ERISA  Section  4044(a)(1)-(6))  of the  IMS  Health
Transferred  Retirement Plan Employees under the Corporation  Retirement Plan at
the Effective  Time,  and the  denominator  of which is the Present Value of the
accrued   vested  and   nonvested   benefits   (as  defined  in  ERISA   Section
4044(a)(1)-(6))  of  the  Corporation   Pre-Distribution   Employees  under  the
Corporation Retirement Plan at the Effective Time.

     "IMS  Health  Savings  BEP"  shall  mean  the IMS  Health  Savings  Benefit
Equalization Plan to be adopted by IMS Health pursuant to Section 4.2.

     "IMS Health  Savings Plan" shall mean the defined  contribution  plan to be
adopted by IMS Health pursuant to Section 3.2(a) of this Agreement.

     "IMS Health Savings Plan Transfer Date" shall have the meaning set forth in
Section 3.2(b) of this Agreement.

     "IMS  Health  SERP"  shall  mean  the  IMS  Health  Supplemental  Executive
Retirement Plan to be adopted by IMS Health pursuant to Section 4.2.

     "IMS Health  Transferred  Retirement Plan Employees" shall have the meaning
set forth in Section 2.2(a) of this Agreement.



                                                                               8


     "IMS Health Transferred  Savings Plan Employees" shall have the meaning set
forth in Section 3.2(a) of this Agreement.

     "IMS Health  Transitional  Employees"  shall mean Corporate Staff Employees
who are under an  agreement  to remain  employed  by the  Corporation  after the
Effective  Time  for a fixed  period  of time  either  to  perform  services  in
connection with the  Distribution or to perform  services  primarily for the IMS
Health Group.

     "Information  Statement"  shall mean the Information  Statement sent to the
holders  of  shares  of  Corporation   Common  Stock  in  connection   with  the
Distribution, including any amendment or supplement thereto.

     "Initial IMS Health  Retirement  Plan Transfer Date" shall have the meaning
set forth in Section 2.2(a) of this Agreement.

     "Initial  Transferred  Assets"  shall have the meaning set forth in Section
2.2(b) of this Agreement.

     "Liabilities"  shall  mean  any and all  losses,  claims,  charges,  debts,
demands, actions, causes of action, suits, damages, obligations, payments, costs
and  expenses,  sums  of  money,  accounts,   reckonings,   bonds,  specialties,
indemnities  and  similar  obligations,   exonerations,   covenants,  contracts,
controversies,  agreements,  promises, doings, omissions, variances, guarantees,
make whole agreements and similar obligations, and other liabilities,  including
all  contractual  obligations,   whether  absolute  or  contingent,  matured  or
unmatured,  liquidated or unliquidated,  accrued or unaccrued, known or unknown,
whenever arising,  and including those arising under any law, rule,  regulation,
Action,  threatened or contemplated  Action (including the costs and expenses of
demands,  assessments,  judgments,  settlements and compromises relating thereto
and  attorneys'  fees and any and all costs and  expenses  (including  allocated
costs of in-house counsel and other personnel),  whatsoever  reasonably incurred
in investigating,  preparing or defending against any such Actions or threatened
or contemplated  Actions),  order or consent decree of any governmental or other
regulatory  or  administrative  agency,  body or  commission or any award of any
arbitrator  or  mediator  of any kind,  and those  arising  under any  contract,
commitment or undertaking,  including  those arising under this  Agreement,  the
Distribution Agreement or any Ancillary Agreement,  in each case, whether or not
recorded or  reflected  or required to be recorded or reflected on the books and
records or financial statements of any person.

     "Nonemployer  Stock" shall mean,  after the  Distribution  Date, IMS Health
Common Stock credited to the account of a Corporation Post-Distribution Employee
and Corporation Common Stock credited to an account of an IMS Health Employee in
the 



                                                                               9


pooled  stock  fund of the  respective  savings  plan  in  which  such  employee
participates, pursuant to Section 3.4.

     "PBGC" shall mean the Pension Benefit Guaranty Corporation or any successor
entity thereto.

     "PBGC  Assumptions"  shall mean the actuarial  assumptions  set forth in 29
C.F.R. Part 2619, et seq.

     "person" shall mean any natural person, corporation,  business trust, joint
venture,  association,  company,  partnership  or  government,  or any agency or
political subdivision thereof.

     "Present  Value"  shall  mean the  single  sum  value of a series of future
payments,  determined utilizing PBGC Assumptions in effect as of the measurement
date.

     "Service" shall mean the Internal  Revenue Service or any successor  entity
thereto.

     "Shared Transaction  Services Agreements" shall mean the Shared Transaction
Services Agreements between Corporation and IMS Health.

     "Subsidiary"  shall mean any  corporation,  partnership  or other entity of
which  another  entity (i) owns,  directly or  indirectly,  ownership  interests
sufficient to elect a majority of the Board of Directors (or persons  performing
similar  functions)  (irrespective  of  whether  at the time any other  class or
classes of ownership interests of such corporation,  partnership or other entity
shall or might have such voting power upon the occurrence of any contingency) or
(ii) is a general partner or an entity  performing  similar  functions  (e.g., a
trustee).

     "Tax Allocation  Agreement" shall mean the Tax Allocation Agreement between
Corporation and IMS Health.

     "Transition  Services  Agreement"  shall  mean  the  Amended  and  Restated
Transition Services Agreement among Corporation,  IMS Health, ACNielsen, D&B and
R.H. Donnelley Corporation.

     "Walsh" shall mean Walsh International Inc., a Delaware corporation.

     "Walsh  Optionees"  shall mean  individuals  whose  options to purchase the
common stock of Walsh were converted into options to purchase Corporation Common
Stock (other than those individuals who are IMS Health Employees).



                                                                              10


                                   ARTICLE II
                           CORPORATION RETIREMENT PLAN

     SECTION 2.1.  Corporation  Retirement  Plan.  From and after the  Effective
Time,  Corporation  shall continue to sponsor the Corporation  Retirement  Plan.
Active participation of IMS Health Transferred  Retirement Plan Employees in the
Corporation  Retirement Plan shall cease  immediately  after the Effective Time.
Nothing  contained in this Article II shall have the effect of accelerating  the
degree to which any individual has a vested  interest in or eligibility  for the
Corporation Retirement Plan or the IMS Health Retirement Plan.

     SECTION 2.2. IMS Health  Retirement  Plan.  (a) As of the  Effective  Time,
(herein  referred to as the "IMS Health  Retirement Plan Effective  Date"),  IMS
Health shall  establish  the IMS Health  Retirement  Plan for the benefit of IMS
Health  Employees,  IMS Disabled  Employees,  IMS Health Retirees and IMS Health
Transitional  Employees who were participants in the Corporation Retirement Plan
immediately prior to the Effective Time (the "IMS Health Transferred  Retirement
Plan  Employees").  On the first  business  day after  the  Effective  Time (the
"Initial IMS Health Retirement Plan Transfer Date"), Corporation shall cause the
trustee of the Corporation  Retirement Plan to segregate,  based on a good faith
estimate made in accordance with the spinoff  provisions set forth under Section
414(l) of the Code, the assets of the  Corporation  Retirement Plan allocable to
IMS Health  Transferred  Retirement Plan Employees in an amount equal to the sum
of (i) and (ii), as follows:

          (i) the amount  allocable to IMS Health  Transferred  Retirement  Plan
     Employees  under ERISA  Section 4044 as of the Effective  Time,  determined
     using PBGC Assumptions; and

          (ii) the  excess  (if any) of the fair  market  value of assets of the
     Corporation  Retirement  Plan  over the  Present  Value of the  vested  and
     nonvested   benefits   accrued   thereunder   for   all   the   Corporation
     Pre-Distribution  Employees as of the Effective Time, multiplied by the IMS
     Health Retirement Plan Segregation Ratio.

     (b) On the Initial IMS Health  Retirement  Plan Transfer  Date,  90% of the
segregated  assets  determined  under  Section  2.2(a)  of this  Agreement  (the
"Initial   Transferred  Assets")  shall  be  transferred  to  a  separate  trust
established under the IMS Health Retirement Plan.

     (c) From the Effective Time until the Final IMS Health Retirement  Transfer
Date (as defined below),  the remaining 10% of the segregated  assets determined
under Section 2.2(a) of this  Agreement  shall be invested by the trustee of the
Corporation  Retirement Plan with the same  investment  managers and in the same



                                                                              11


proportions  as such assets were  invested  immediately  prior to the  Effective
Time, which are set forth in Schedule 2.2 hereof.

     (d) As soon as practicable  after the Effective Time, the remaining  assets
allocable  to the IMS Health  Transferred  Retirement  Plan  Employees  shall be
transferred to a separate trust established under the IMS Health Retirement Plan
(such date herein referred to as the "Final IMS Health  Retirement Plan Transfer
Date"); provided, however, that in no event shall such transfer take place until
Corporation  shall make all required  amendments to the  Corporation  Retirement
Plan and related trust  agreement  necessary to provide for the  segregation and
transfer of assets described in this Section 2.2. The value of such assets to be
transferred  shall equal the value of segregated assets determined based on same
methodology as in Section 2.2(a) of this  Agreement,  reduced by an amount equal
to the Initial Transferred Assets, adjusted as follows:

          (i)  reduced  by  the  amount  of  benefit  payments  made  under  the
     Corporation   Retirement  Plan  with  respect  to  IMS  Health  Transferred
     Retirement  Plan  Employees from the Effective Time to the Final IMS Health
     Retirement Plan Transfer Date; and

          (ii)  increased  (or  decreased)  by the  share of the net  investment
     income (or loss) and expenses  incurred or for which invoices are submitted
     after the Effective  Time to the IMS Health  Retirement  Plan Transfer Date
     attributable to the value of such segregated assets.

     (e) Unless otherwise  agreed to by Corporation and IMS Health,  the form of
the assets to be transferred shall consist of an undivided  percentage  interest
in each asset that is held by the Corporation  Retirement Plan on the IMS Health
Retirement Plan Transfer Date, such undivided percentage interest being equal to
the value of assets  allocable  to the IMS Health  Transferred  Retirement  Plan
Employees, divided by the fair market value of plan assets.

     (f) If the amount of the Initial  Transferred  Assets  exceeds the value of
the  assets  to be  transferred  as  determined  under  Section  2.2(d)  of this
Agreement,  such excess amount shall promptly be transferred from the IMS Health
Retirement Plan trust to the Corporation Retirement Plan trust.

     SECTION 2.3.  Allocation of Liabilities.  The IMS Health Group shall assume
all  Liabilities  relating  to  the  participation  of  IMS  Health  Transferred
Retirement  Plan Employees in the Corporation  Retirement  Plan. The Corporation
Group shall retain all other Liabilities relating to the Corporation  Retirement
Plan.



                                                                              12


                                   ARTICLE III
                            CORPORATION SAVINGS PLAN

     SECTION 3.1.  Corporation  Savings Plan. From and after the Effective Time,
Corporation  shall  continue to sponsor the  Corporation  Savings  Plan.  Active
participation  of  IMS  Health   Transferred   Savings  Plan  Employees  in  the
Corporation  Savings  Plan shall cease  immediately  after the  Effective  Time.
Nothing  contained in this Article III shall have the effect of accelerating the
degree to which any individual has a vested interest in the Corporation  Savings
Plan or the IMS Health Savings Plan.

     SECTION 3.2. IMS Health  Savings Plan.  (a) As of the Effective  Time,  IMS
Health  shall  adopt the IMS Health  Savings  Plan for the benefit of IMS Health
Employees,  IMS Health Disabled Employees, IMS Health Transitional Employees and
IMS Health  Retirees  who were  participants  in the  Corporation  Savings  Plan
immediately  prior to the Effective  Time (the "IMS Health  Transferred  Savings
Plan Employees").

     (b) Prior to the date on which the  transfer of assets and  liabilities  to
the IMS Health  Savings Plan shall occur (the "IMS Health  Savings Plan Transfer
Date"),  which  date  shall  occur as  promptly  as  practicable  following  the
Effective  Time,  Corporation  shall (A) cause the  trustee  of the  Corporation
Savings Plan to segregate,  in accordance with the spinoff  provisions set forth
under Section  414(l) of the Code,  the assets of the  Corporation  Savings Plan
representing  the full account balances of IMS Health  Transferred  Savings Plan
Employees  for  all  periods  of   participation   through  the  Effective  Time
(including,  as  applicable,  all  contributions  and all earnings  attributable
thereto);  (B) make all  required  filings and  submissions  to the  appropriate
governmental  agencies;  and (C) make all required amendments to the Corporation
Savings  Plan  and  related  trust  agreement   necessary  to  provide  for  the
segregation and transfer of assets described in this Section 3.2.

     (c) On the IMS Health  Savings Plan Transfer  Date,  IMS Health shall cause
the trustee of the  Corporation  Savings  Plan to transfer to the trustee of the
IMS Health  Savings Plan the full account  balances  (inclusive of loans) of IMS
Health  Transferred  Savings Plan  Employees  in kind based on those  investment
funds in which such  account  balances  are then  invested  (including,  but not
limited to, the pooled stock fund described in Section 3.4); provided,  however,
that loans to IMS Health Transferred Savings Plan Employees shall be transferred
in the form of notes. In consideration of the segregation and transfer of assets
described  herein,  the IMS  Health  Savings  Plan  shall,  as of the IMS Health
Savings Plan Transfer Date, assume all Liabilities  attributable to such assets,
whether  incurred prior to or after the Effective Time. If the account  balances
of the IMS  Health  Transferred  Savings  Plan that are  transferred  on the IMS
Health  Savings  Plan  Transfer  Date are  thereafter  determined  to have  been
incorrect,



                                                                              13


the parties  agree to make  appropriate  payments or asset  transfers to correct
such error  (appropriately  adjusted for  subsequent  investment  experience and
expenses incurred).

     SECTION 3.3.  Outstanding Loans.  During their employment with Corporation,
IMS  Health  Transferred  Savings  Plan  Employees  who have  outstanding  loans
originally  made from the  Corporation  Savings Plan shall be permitted to repay
such loans by way of regular deductions from their paychecks,  and, prior to the
IMS Health  Savings Plan Transfer  Date,  Corporation or IMS Health (as the case
may be) shall  cause all such  deductions  to be  forwarded  to the  Corporation
Savings Plan as promptly as practicable.

     SECTION 3.4.  Employer  Stock Fund.  (a)  Participants  in the  Corporation
Savings Plan who,  immediately prior to the Effective Time, have balances in the
Corporation  Common  Stock fund shall have such  balances  converted,  as of the
Effective  Time,  to the  extent  applicable,  to units in a pooled  stock  fund
consisting of Corporation  Common Stock and IMS Health Common Stock. The initial
ratio of stock in the pooled stock fund shall be one share of Corporation Common
Stock to one share of IMS Health Common Stock.  The percentage  interest of each
participant  in the pooled stock fund as of the Effective  Time shall equal such
participant's   percentage   interest  in  the  Corporation  Common  Stock  fund
immediately  prior to the  Effective  Time.  The IMS Health  Savings  Plan shall
maintain  a pooled  stock  fund,  to which the pooled  stock fund  assets of IMS
Health Transferred  Savings Plan Employees in the Corporation Savings Plan shall
be transferred on the IMS Health Savings Plan Transfer Date. Notwithstanding the
foregoing,  the Corporation Savings Plan shall transfer the units of Corporation
Common Stock from the pooled stock fund into the  Corporation  Common Stock fund
and the IMS Health  Savings Plan shall  transfer the units of IMS Health  Common
Stock from the pooled stock fund into the IMS Health Common Stock fund.

     (b) Within nine months after the Distribution  Date, each participant shall
liquidate  his or her units of  Nonemployer  Stock in the pooled  stock fund and
invest the proceeds thereof in any other  investment  option available under the
applicable  plan. If the participant  does not liquidate such units,  such units
shall be liquidated and invested in a fixed income  investment  option available
under the applicable plan.

     (c) A participant may not acquire additional units in the pooled stock fund
from or after the Effective Time.

     SECTION 3.5.  Allocation of Liabilities.  The IMS Health Group shall assume
all Liabilities  relating to the participation of IMS Health Transferred Savings
Plan  Employees in the  Corporation  Savings Plan. The  Corporation  Group shall
retain all other Liabilities relating to the Corporation Savings Plan.



                                                                              14


                                   ARTICLE IV
                               NONQUALIFIED PLANS

     SECTION 4.1.  Corporation  Nonqualified Plans. From and after the Effective
Time,   Corporation   shall  continue  to  sponsor  the  Corporation  SERP,  the
Corporation  Pension  REP and the  Corporation  Savings BEP  (collectively,  the
"Corporation    Nonqualified    Plans")   for   the   benefit   of   Corporation
Post-Distribution Employees and Corporation Retirees who, prior to the Effective
Time,   were   participants   thereunder    ("Corporation    Nonqualified   Plan
Participants").

     SECTION 4.2. IMS Health  Nonqualified  Plans. As of the Effective Time, IMS
Health shall (i) adopt the IMS Health SERP,  the IMS Health  Pension REP and the
IMS Health Savings BEP (collectively,  the "IMS Health Nonqualified  Plans") for
the  benefit  of  IMS  Health   Employees  and  IMS  Health  Retirees  who  were
participants  in the Corporation  Nonqualified  Plans  immediately  prior to the
Effective Time ("IMS Health Nonqualified Plan Participants") and (ii) assume the
Liabilities for benefits under the Corporation  Nonqualified  Plans with respect
to such employees.

     SECTION  4.3.  Joint and  Several  Liability.  Corporation  and IMS  Health
acknowledge joint and several  liability under the Employee  Benefits  Agreement
dated as of October 28, 1996 among D&B,  Corporation  and ACNielsen with respect
to certain  nonqualified  plans  maintained  by D&B prior to such  date.  To the
extent such joint and several  liability is imposed on Corporation in respect of
a liability  assumed by IMS Health under this  Agreement,  Corporation  shall be
entitled  to  contribution  from IMS  Health  for the  amount of such  liability
imposed.  To the extent joint and several  liability is imposed on IMS Health in
respect of a liability assumed by Corporation  under this Agreement,  IMS Health
shall be  entitled  to  contribution  from  Corporation  for the  amount of such
liability imposed.

     SECTION 4.4. Third-Party Beneficiaries.  It is the intention of the parties
to this Agreement that the provisions of Section 4.3 shall be enforceable by (a)
Corporation  and  IMS  Health  Nonqualified  Plan  Participants  and  (b)  their
respective surviving beneficiaries.




                                                                              15


                                    ARTICLE V
                                  WELFARE PLANS

     SECTION 5.1.  Employee Benefit Welfare Plans.  Prior to the Effective Time,
the Corporation shall continue to sponsor its Employee Benefit Welfare Plans for
the benefit of  Corporation  Pre-Distribution  Employees.  Except as provided in
Section  5.4  and  Section  5.5  below,  from  and  after  the  Effective  Time,
Corporation  shall  sponsor its Employee  Benefit  Welfare  Plans solely for the
benefit  of  Corporation   Post-Distribution  Employees,   Corporation  Disabled
Employees and  Corporation  Retirees.  From and after Effective Time, IMS Health
shall sponsor its Employee  Benefit  Welfare Plans solely for the benefit of IMS
Health  Employees,  IMS  Health  Retirees  and IMS  Health  Disabled  Employees.
Notwithstanding the foregoing, neither Corporation nor IMS Health shall have any
obligation to sponsor any Employee  Benefit Welfare Plan from or after Effective
Time.

     SECTION  5.2.  Dollar  Limits.  With respect to any medical and dental plan
that may be sponsored by IMS Health after the Effective  Time,  IMS Health shall
give effect, in determining any deductible,  maximum  out-of-pocket  limitations
and annual plan maximums,  to claims incurred during 1998 prior to the Effective
Time by IMS Health  Employees,  IMS  Health  Retirees  and IMS  Health  Disabled
Employees  under  similar  plans  maintained  by  Corporation  (or any Affiliate
thereof) for their benefit immediately prior to the Effective Time.

     SECTION  5.3.  Severance  Plans.  The  Corporation  Group shall  retain all
Liabilities with respect to severance payments made or to be made to Corporation
Retirees  including any liabilities for severance payments under the Corporation
Transition Plans. The IMS Health Group shall retain all Liabilities with respect
to severance  payments made or to be made to IMS Health  Retirees  including any
liabilities for severance  payments under the Corporation  Transition Plans. For
purposes of this Section 5.3, the term  "severance  payments"  shall include any
welfare benefit coverage provided under severance plans.

     SECTION 5.4.  Flexible  Spending  Accounts.  From the Effective  Time until
December 31, 1998,  Corporation  shall continue to sponsor its flexible spending
accounts for all Corporation Pre-Distribution Employees; provided, however, that
IMS Health shall cause all deductions from participant paychecks to be forwarded
to Corporation within two business days thereafter;  provided, further, that IMS
Health shall reimburse  Corporation for the  administrative  costs incurred with
respect to IMS Health  Employees.  All unused  funds  remaining  in the flexible
spending  accounts of IMS Health Employees after April 30, 1999 shall be paid to
IMS Health.

     SECTION  5.5.  Allocation  of  Liabilities.  (a) The IMS Health Group shall
retain  responsibility  for and  continue  to pay  all  claims  relating  to the
Corporation  self-insured  Medical  and  



                                                                              16


Dental Plans with respect to claims  incurred  prior to the Effective  Time, but
which are paid after the  Effective  Time, by IMS Health  Employees,  IMS Health
Disabled  Employees,  IMS Health  COBRA  participants,  IMS Health  Transitional
Employees  and IMS Health  Retirees  as well as their  covered  dependents.  Any
claims  relating to the Corporation  self-insured  Medical and Dental Plans with
respect to claims incurred prior to the Effective Time, but which are paid after
the Effective  Time, by Corporation  Pre-Distribution  Employees who are not IMS
Health Employees will remain the responsibility of The Corporation Group.

     (b) The Corporation Group shall retain  responsibility  for and continue to
pay all premiums,  expenses and benefits  relating to the  Corporation  Employee
Welfare  Plans  with  respect to claims  incurred  (for  self-insured  plans) or
premiums  due  (for  insured  plans)  from  and  after  the  Effective  Time  by
Corporation   Post-Distribution   Employees,   Corporation  Disabled  Employees,
Corporation COBRA participants and Corporation Retirees as well as their covered
dependents.

     (c) The IMS Health  Group shall retain  responsibility  for and continue to
pay all premiums,  expenses and benefits  relating to the Employee Welfare Plans
with respect to claims  incurred (for  self-insured  plans) or premiums due (for
insured  plans) from and after the Effective Time by IMS Health  Employees,  IMS
Health  Disabled   Employees,   IMS  Health  COBRA   participants,   IMS  Health
Transitional  Employees  and  IMS  Health  Retirees  as well  as  their  covered
dependents.

     (d) For the purposes of this Section 5.5, a claim is deemed  incurred  when
the  services  that are the subject of the claim are  performed;  in the case of
life insurance, when the death occurs; in the case of long-term disability, when
the disability  occurs;  and, in the case of a hospital stay,  when the employee
first enters the hospital. Notwithstanding the foregoing, claims incurred by any
employee  of a  pre-Distribution  Subsidiary  of  Corporation  or their  covered
dependents  under any welfare plan maintained by such Subsidiary  solely for the
benefit of its employees and their dependents shall,  whether incurred prior to,
on or after the Effective Time, be the sole responsibility and liability of that
Subsidiary.

     (e) The  Corporation  Group shall be responsible for all COBRA coverage for
any Corporation  Retiree and his or her covered dependents who participated in a
Corporation  Employee  Benefit Welfare Plan and who had or have a loss of health
care coverage due to a qualifying  event  occurring prior to the Effective Time.
The IMS Health  Group shall be  responsible  for all COBRA  coverage for any IMS
Health  Retiree  and  his  or  her  covered  dependents  who  participated  in a
Corporation  Employee  Benefit Welfare Plan and who had or have a loss of health
care coverage due to a qualifying  event  occurring prior to the Effective Time.
Notwithstanding  the  foregoing,  a  pre-Distribution  Subsidiary of Corporation
shall be responsible for all COBRA coverage for its 



                                                                              17


former  employees and covered  dependents who  participated in a plan maintained
solely for their  benefit  whether the  applicable  event occurs prior to, on or
after   the   Effective   Time.   COBRA   coverage   to   which  a   Corporation
Post-Distribution  Employee  is  entitled  as a  result  of a  qualifying  event
occurring  at or after the  Effective  Time shall be the  responsibility  of the
Corporation Group.

     SECTION  5.6.  Allocation  of the  Corporation's  Self-Insured  Medical and
Dental Plans Reserve for Claims Incurred But Not Yet Reported  (IBNR).  The IBNR
reserve of which is  estimated to be  approximately  $2.5 million as of June 30,
1998 will be allocated 61.9% to the Corporation Group and 38.1% to IMS Health.

     SECTION  5.7.  Retiree  Welfare  Plans.  The  Corporation  Group  shall  be
responsible  for  providing  retiree  welfare  benefits,  where  applicable,  to
Corporation Retirees and Corporation Post-Distribution Employees. The IMS Health
Group  shall be  responsible  for  providing  retiree  welfare  benefits,  where
applicable, to IMS Health Retirees and IMS Health Employees.


                                   ARTICLE VI
                               EQUITY-BASED PLANS

     SECTION 6.1.  Corporation  Stock Options.  Stock options  awarded under the
Corporation Stock Option Plans ("Corporation Stock Options") shall be treated as
follows:

     (a)  Corporation  Post-Distribution  Employees;  and  Corporation  Disabled
Employees. From and after the Effective Time, each unexercised Corporation Stock
Option held by Corporation  Post-Distribution  Employees,  Corporation  Disabled
Employees and the specified  options held by the persons  listed on Schedule 6.1
shall remain  outstanding  pursuant to the terms of the award agreements and the
Corporation  Stock Option  Plans;  provided,  however,  that from and after such
time, each  unexercised  Corporation  Stock Option shall be adjusted as follows:
(i) the number of shares of  Corporation  Common  Stock  covered by the adjusted
stock  option shall be  determined  by (A)  multiplying  the number of shares of
Corporation  Common Stock covered by the Corporation Stock Option by a fraction,
the  numerator of which  equals the average of high and low trading  prices of a
share  of  Corporation  Common  Stock  for the  five  trading  days  immediately
preceding the ex-dividend  date, and the denominator of which equals the average
of high and low trading  prices of a share of  Corporation  Common Stock for the
five trading days starting on the ex-dividend trading Date ("Corporation Ratio")
and (B)  rounding  down the  result to a whole  number  of  shares  and (ii) the
exercise  price of the adjusted  stock option shall equal the original  exercise
price divided by the Corporation Ratio.



                                                                              18


     (b) IMS Health Employees;  IMS Health  Transitional  Employees;  IMS Health
Disabled  Employees;  and Walsh  Optionees.  As of the Effective  Time, (i) each
unexercised  Corporation Stock Option held by IMS Health  Employees,  IMS Health
Transitional Employees,  IMS Health Disabled Employees and Walsh Optionees shall
be cancelled except as provided in Schedule 6.1 and (ii) such individuals  shall
except as provided in Schedule 6.1 receive  replacement  stock  options  awarded
under the IMS Health  Replacement  Plans,  which  shall be adopted by IMS Health
prior to the  Effective  Time.  The number of shares of IMS Health  Common Stock
covered by each replacement  stock option shall be determined by (i) multiplying
the  number of shares of  Corporation  Common  Stock  covered  by the  cancelled
Corporation  Stock  Option by a  fraction,  the  numerator  of which  equals the
average of high and low trading  prices of a share of  Corporation  Common Stock
for the five trading days  immediately  preceding the ex-dividend  date, and the
denominator of which equals the average of high and low trading prices of an IMS
Health  Common  Share for the five  trading  days  starting  on the  regular way
trading date ("IMS Health  Ratio") and (ii)  rounding down the result to a whole
number of shares.  The exercise price of each replacement  stock option shall be
determined  by dividing the exercise  price of the cancelled  Corporation  Stock
Option by the IMS Health ratio.  Except as otherwise  provided in the IMS Health
Replacement Plans, all other terms of the replacement stock options shall remain
substantially identical to the terms of the cancelled Corporation Stock Options.

     (c) IMS Health  Retirees;  and  Corporation  Retirees.  As of the Effective
Time, (i) each unexercised  Corporation Stock Option held by IMS Health Retirees
and Corporation  Retirees shall be adjusted in substantially  the same manner as
employees  of the  Corporation  Group and (ii) IMS  Health may offer to such IMS
Health  Retirees and  Corporation  Retirees,  and the IMS Health  Committee  may
determine,  alternative  adjustments  or  substitutions,  provided such Retirees
agree to surrender their adjusted Corporation Stock Options.

     SECTION 6.2.  Corporation  LSARs.  All limited  stock  appreciation  rights
awarded under the Corporation Stock Option Plans ("Corporation  LSARs") shall be
adjusted or substituted (as the case may be) in substantially the same manner as
the Corporation Stock Options described in Section 6.1 above.

     SECTION 6.3.  Restricted  Stock Plan.  Restricted  stock  awarded under the
Corporation Stock Option Plans  ("Corporation  Restricted Stock") and restricted
stock received as a result of the Distribution  ("IMS Health Restricted  Stock")
shall be treated as follows:

     (a)  Corporation  Post-Distribution  Employees.  As of Effective  Time, IMS
Health  Restricted  Stock  credited to Corporation  Post-Distribution  Employees
shall be adjusted  pursuant to the Corporation  Stock Option Plans and each such



                                                                              19


individual shall receive a number of additional shares of Corporation Restricted
Stock,  determined by  multiplying  the number of shares of forfeited IMS Health
Restricted  Stock by the Corporation  Ratio and the reciprocal of the IMS Health
Ratio, having the same terms as the Corporation Restricted Stock from which they
arose.

     (b) IMS Health Employees.  As of the Effective Time, Corporation Restricted
Stock and IMS Health  Restricted  Stock credited to IMS Health Employees and IMS
Health  Transitional  Employees  shall be forfeited and such  individuals  shall
receive  replacement  IMS  Health  Restricted  Stock  equal to (i) the number of
shares of forfeited IMS Health  Restricted  Stock plus (ii) the number of shares
of forfeited Corporation Restricted Stock multiplied by the IMS Health Ratio and
the reciprocal of the Corporation  Ratio, such replacement  shares of IMS Health
Restricted Stock to have the same terms as the Corporation Restricted Stock from
which they arose.

     SECTION 6.4. Executive Annual Incentive Plan.  Outstanding awards under the
Corporation  Executive  Annual  Incentive Plan shall be treated as determined by
the Corporation and IMS Health, respectively.

     SECTION 6.5.  Corporation  Employee Stock Purchase Plan. (a) From and after
the  Effective  Time,  Corporation  shall  continue to sponsor  the  Corporation
Employee Stock Purchase Plan.

     (b) As of the  Effective  Time,  IMS  Health  shall  adopt  the IMS  Health
Employee Stock Purchase Plan for the benefit of IMS Health Employees.

     SECTION 6.6.  Allocation of Liabilities.  The IMS Health Group shall assume
all  Liabilities  with respect to awards  granted to IMS Health  Employees,  IMS
Health Retirees, Corporation Retirees and IMS Health Disabled Employees pursuant
to the IMS Health  Replacement  Option Plan. The Corporation  Group shall retain
all other Liabilities with respect to awards granted pursuant to the Corporation
Stock Option Plans (including, but not limited to, awards granted to Corporation
Post-Distribution Employees).


                                   ARTICLE VII
                         FOREIGN EMPLOYEE BENEFIT PLANS

     SECTION  7.1.  Foreign  Plans.   Except  as  set  forth  in  Schedule  7.1,
Corporation  and IMS Health shall  continue to sponsor and retain  liability for
any Employee Benefits Plans maintained outside the United States with respect to
their respective employees.


                                  ARTICLE VIII



                                                                              20


                          OTHER EMPLOYEE BENEFIT ISSUES

     SECTION 8.1. Employee Benefit Litigation  Liabilities.  Except as otherwise
expressly  provided in this  agreement,  the IMS Health  Group shall  assume all
Employee  Benefit  Litigation  Liabilities  that  are  asserted  by  Corporation
Pre-Distribution  Employees  who  were  employees  of the IMS  Health  Group  or
Corporate Staff  Employees and the  Corporation  Group shall assume all Employee
Benefit  Litigation  Liabilities  that are  asserted  by all  other  Corporation
Pre-Distribution Employees.

     SECTION 8.2. Indemnification. To the extent that any claim or litigation is
asserted against  Corporation by a Corporation Retiree who was a Corporate Staff
Employee  prior  to  the   Distribution,   Corporation   shall  be  entitled  to
indemnification from IMS Health for the amount of any liability imposed.

     SECTION 8.3. Workers' Compensation.  The Corporation Group shall retain all
Liabilities  relating to workers'  compensation  claims that were  incurred  (a)
prior  to the  Effective  Time  with  respect  to  Corporation  Pre-Distribution
Employees  who were  employed by the  Corporation  Group (not  including the IMS
Health Group) and Corporate Staff Employees allocated to Corporation as a result
of the  Distribution  and (b) on and after the  Effective  Time with  respect to
Corporation  Post-Distribution  Employees. The IMS Health Group shall retain all
Liabilities  relating to workers'  compensation  claims that were  incurred  (a)
prior  to the  Effective  Time  with  respect  to  Corporation  Pre-Distribution
Employees  who  were  employed  by the IMS  Health  Group  and  Corporate  Staff
Employees allocated to IMS Health as a result of the Distribution and (b) on and
after the Effective Time with respect to IMS Health  Employees.  For purposes of
this  paragraph,  a claim is deemed incurred when the injury that is the subject
of the claim occurs.

     SECTION 8.4. Cash Funding.  Sufficient cash shall be left with  Corporation
upon the  Distribution,  based on a good faith  estimate,  to fund all severance
(and related  benefits)  Liabilities of Corporate  Staff  Employees  retained by
Corporation  Group  pursuant to Section  5.3(a)  hereof as well as the  unfunded
amounts  payable by  Corporation  to  Corporation  Retirees  hereunder  who were
Corporate  Staff  Employees  (including  the  actuarially  determined  value  of
payments under  non-qualified plans pursuant to Section 4.1 hereof and the value
of retiree welfare  benefits  pursuant to Section 5.7 hereof).  Such cash amount
shall  include  amounts  sufficient  to fund  all such  payments  as well as any
related  tax,  social  security  and similar  government-mandated  payments  and
employee plan  contributions,  (i) without  giving  effect to any  present-value
calculation   and  (ii)  with  respect  to  severance  (and  related   benefits)
liabilities, net of tax benefits calculated at a 40% rate. If the estimated cash
amounts  result in an  excess or  deficit  over or under  the  amounts  actually
expended  by  Corporation  for such  items,  appropriate  payments  will



                                                                              21


be made  between  the parties to  eliminate  any such excess or deficit no later
than December 31, 1998.


                                   ARTICLE IX
                           BENEFIT PLAN PARTICIPATION

     SECTION 9.1. Corporation Plans. Except as specifically provided herein, all
IMS Health  Employees  shall cease  participation  in all  Corporation  Employee
Benefit Plans as of the Effective Time.

     SECTION  9.2. IMS Health  Plans.  Except as provided in Section 5.7 herein,
(a) with respect to any newly created Employee Benefit Plan sponsored by the IMS
Health Group after the  Effective  Time,  the IMS Health Group shall cause to be
recognized  (to the  extent  applicable)  each IMS  Health  Employee's  (i) past
service with the Corporation  Group to the extent recognized under similar plans
maintained by the Corporation  Group immediately prior to the Effective Time and
(ii)  accrued  but unused  vacation  time and sick days,  and (b) any IMS Health
Employee who  participated in a Corporation  Employee  Benefit Plan  immediately
prior to the Effective  Time shall be entitled to immediate  participation  in a
similar newly created Employee Benefit Plan sponsored by the IMS Health Group.

     SECTION 9.3. Subsequent Employer. Except as provided in Section 5.6 herein,
if,  during the one-year  period  following  the  Effective  Time, a Corporation
Post-Distribution  Employee or a IMS Health Employee terminates  employment with
his  or  her  employer  and  then  immediately  commences  employment  with  the
Corporation  Group or the IMS Health Group, the subsequent  employer shall cause
to be recognized (to the extent  applicable)  such  employee's past service with
the  Corporation  Group or the IMS Health Group to the extent  recognized  under
similar plans maintained by the prior employer.  Notwithstanding  the foregoing,
no past service shall be recognized  with respect to pension  accruals under the
defined benefit plans of the subsequent employer.

     SECTION 9.4. Right to Amend or Terminate.  Except as specifically  provided
herein,  nothing in this Agreement shall be construed or interpreted to restrict
the Corporation Group's or the IMS Health Group's right or authority to amend or
terminate any of their Employee Benefit Plans following the Effective Time.




                                                                              22

                                    ARTICLE X
                              ACCESS TO INFORMATION

     SECTION  10.1.  Access  to  Information.  Article  IV of  the  Distribution
Agreement  shall govern the rights of the  Corporation  Group and the IMS Health
Group with respect to access to information.  The term "Records" in that Article
shall be read to include all Employee Benefit Records.


                                   ARTICLE XI
                                 INDEMNIFICATION

     SECTION 11.1.  Indemnification.  Article III of the Distribution  Agreement
shall govern the rights of the  Corporation  Group and the IMS Health Group with
respect to indemnification.  The term "Corporation  Liabilities" in that Article
shall be read to include all Liabilities  assumed or retained by the Corporation
Group  pursuant to this  Agreement.  The term "IMS Health  Liabilities"  in that
Article shall be read to include all Liabilities  assumed or retained by the IMS
Health Group pursuant to this Agreement.


                                   ARTICLE XII
                               DISPUTE RESOLUTION

     SECTION 12.1. Dispute Resolution.  Article VI of the Distribution Agreement
shall govern the rights of the  Corporation  Group and the IMS Health Group with
respect to dispute  resolution.  The term  "Agreement  Dispute" in that  Article
shall be read to include all Employee Benefit Disputes.


                                  ARTICLE XIII
                                  MISCELLANEOUS

     SECTION 13.1. Complete Agreement;  Construction.  This Agreement, including
the  Exhibits and  Schedules  (if any),  and the  Distribution  Agreement  shall
constitute the entire agreement  between the parties with respect to the subject
matter hereof and shall  supersede all previous  negotiations,  commitments  and
writings with respect to such subject matter.  In the event of any inconsistency
between this  Agreement and any Schedule  hereto,  the Schedule  shall  prevail.
Other than  Sections 2.7 and 4.5 and Article VI of the  Distribution  Agreement,
which shall  prevail over any  inconsistent  or  conflicting  provisions in this
Agreement,  notwithstanding  any  other  provisions  in  this  Agreement  to the
contrary,  in the event and to the extent that there shall be a conflict between
the  provisions  of  this  Agreement  and  the  provisions  of the  Distribution
Agreement, this Agreement shall control.




                                                                              23

     SECTION  13.2.  Ancillary  Agreements.  This  Agreement  is not intended to
address,  and should not be interpreted to address, the matters specifically and
expressly covered by the Ancillary Agreements.

     SECTION 13.3.  Counterparts.  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 such  counterparts  have been signed by
each of the parties and delivered to the other parties.

     SECTION 13.4. Survival of Agreements.  Except as otherwise  contemplated by
this  Agreement,  all covenants and agreements of the parties  contained in this
Agreement shall survive the Distribution Date.

     SECTION 13.5.  Expenses.  Except as otherwise set forth in this  Agreement,
the Distribution  Agreement or any Ancillary  Agreement,  all costs and expenses
incurred and for which invoices have been submitted on or prior to the Effective
Time  (whether or not paid on or prior to the  Distribution  Date) in connection
with the preparation,  execution, delivery and implementation of this Agreement,
the Distribution Agreement,  any Ancillary Agreement,  the Information Statement
(including  any  registration  statement  on Form 10 of which  such  Information
Statement  may be a part)  and the  Distribution  and  the  consummation  of the
transactions  contemplated thereby, as well as all administrative costs, fees or
expenses  relating to any Employee Benefit Plan, shall be charged to and paid by
Corporation,  provided that, if such expenses are not paid by Corporation  prior
to the Effective Time,  they shall be charged to and paid by IMS Health.  Except
as otherwise  set forth in this  Agreement,  the  Distribution  Agreement or any
Ancillary  Agreement,  all such costs,  fees and expenses  incurred or for which
invoices are submitted  after the Effective Time shall be charged to and paid by
IMS Health.  Any amount or expense to be paid or  reimbursed by any party hereto
to any other party  hereto  shall be so paid or  reimbursed  promptly  after the
existence and amount of such  obligation is  determined  and demand  therefor is
paid.

     SECTION 13.6. Notices. All notices and other communications hereunder shall
be in writing and hand  delivered  or mailed by  registered  or  certified  mail
(return  receipt   requested)  or  sent  by  any  means  of  electronic  message
transmission  with delivery  confirmed (by voice or otherwise) to the parties at
the  following  addresses  (or at such other  addresses  for a party as shall be
specified  by like  notice)  and will be deemed  given on the date on which such
notice is received:




                                                                              24


     To Nielsen Media Research, Inc.:
     299 Park Avenue
     New York, NY  10171
     Telecopy: (212) 708-6927
     Attn:  Chief Legal Officer

     To IMS Health Incorporated:
     200 Nyala Farms
     Westport, CT 06880
     Telecopy:  (203) 222-4313
     Attn:  General Counsel


     SECTION  13.7.  Waivers.  The  failure  of  any  party  to  require  strict
performance by any other party of any provision in this Agreement will not waive
or diminish that party's right to demand strict  performance  thereafter of that
or any other provision hereof.

     SECTION  13.8.  Amendments.  Subject to the terms of Section  13.11 hereof,
this  Agreement may not be modified or amended except by an agreement in writing
signed by each of the parties hereto.

     SECTION 13.9. Assignment.  This Agreement shall not be assignable, in whole
or in part,  directly  or  indirectly,  by any party  hereto  without  the prior
written  consent  of the other  parties  hereto,  and any  attempt to assign any
rights or obligations arising under this Agreement without such consent shall be
void.

     SECTION  13.10.  Successors  and Assigns.  The provisions to this Agreement
shall be binding upon, inure to the benefit of and be enforceable by the parties
and their respective successors and permitted assigns.

     SECTION 13.11. Termination. This Agreement (including,  without limitation,
Section  4.4 and  Article  XI  hereof)  may be  terminated  and may be  amended,
modified or abandoned at any time prior to the  Distribution  by and in the sole
discretion  of  Corporation   without  the  approval  of  the   shareholders  of
Corporation. In the event of such termination, no party shall have any liability
of any kind to any other party or any other person. After the Distribution, this
Agreement may not be terminated  except by an agreement in writing signed by the
parties;  provided,  however,  that  Section  4.4 and  Article  XI shall  not be
terminated  or amended  after the  Distribution  in  respect of the third  party
beneficiaries thereto without the consent of such persons.

     SECTION 13.12.  Subsidiaries.  Each of the parties hereto shall cause to be
performed, and hereby guarantees the performance of, all actions, agreements and
obligations  set forth 



                                                                              25


herein to be performed by any  Subsidiary of such party or by any entity that is
contemplated  to be a  Subsidiary  of such  party on and after the  Distribution
Date.

     SECTION 13.13. Third Party Beneficiaries. Except as provided in Section 4.4
and Article XI, this  Agreement is solely for the benefit of the parties  hereto
and their  respective  Subsidiaries  and  Affiliates and should not be deemed to
confer upon third parties any remedy, claim, liability,  reimbursement, claim of
action or other  right in excess of those  existing  without  reference  to this
Agreement.

     SECTION 13.14.  Title and Headings.  Titles and headings to sections herein
are inserted for the  convenience of reference only and are not intended to be a
part of or to affect the meaning or interpretation of this Agreement.

     SECTION 13.15. Exhibits and Schedules.  The Exhibits and Schedules, if any,
shall be construed  with and as an integral  part of this  Agreement to the same
extent as if the same had been set forth verbatim herein.

     SECTION  13.16.  GOVERNING  LAW.  THIS  AGREEMENT  SHALL BE GOVERNED BY AND
CONSTRUED IN  ACCORDANCE  WITH THE LAWS OF THE STATE OF NEW YORK  APPLICABLE  TO
CONTRACTS MADE AND TO BE PERFORMED IN THE STATE OF NEW YORK.



                                                                              26


     SECTION 13.17. Consent to Jurisdiction.  Without limiting the provisions of
Article XII hereof,  each of the parties  irrevocably  submits to the  exclusive
jurisdiction of (a) the Supreme Court of the State of New York, New York County,
and (b) the United States District Court for the Southern  District of New York,
for the  purposes of any suit,  action or other  proceeding  arising out of this
Agreement or any transaction  contemplated hereby. Each of the parties agrees to
commence any action,  suit or  proceeding  relating  hereto either in the United
States  District  Court for the  Southern  District of New York or if such suit,
action or other  proceeding may not be brought in such court for  jurisdictional
reasons, in the Supreme Court of the State of New York, New York County. Each of
the parties  further  agrees that  service of any  process,  summons,  notice or
document by U.S.  registered mail to such party's  respective  address set forth
above shall be effective  service of process for any action,  suit or proceeding
in  New  York  with  respect  to any  matters  to  which  it  has  submitted  to
jurisdiction  in  this  Section  13.17.  Each  of the  parties  irrevocably  and
unconditionally  waives any objection to the laying of venue of any action, suit
or proceeding  arising out of this  Agreement or the  transactions  contemplated
hereby in (i) the Supreme  Court of the State of New York,  New York County,  or
(ii) the United States District Court for the Southern District of New York, and
hereby further irrevocably and unconditionally waives and agrees not to plead or
claim in any such court that any such action,  suit or proceeding brought in any
such court has been brought in an inconvenient forum.

     SECTION 13.18. Severability. In the event any one or more of the provisions
contained in this Agreement should be held invalid,  illegal or unenforceable in
any  respect,  the  validity,  legality  and  enforceability  of  the  remaining
provisions  contained  herein and  therein  shall not in any way be  affected or
impaired  thereby.  The parties  shall  endeavor in good-faith  negotiations  to
replace the invalid,  illegal or unenforceable provisions with valid provisions,
the economic  effect of which comes as close as possible to that of the invalid,
illegal or unenforceable provisions.

     SECTION 13.19. Governmental Notices; Cooperation.  Notwithstanding anything
in this Agreement to the contrary,  all actions contemplated herein with respect
to Employee Benefit Plans which are to be consummated pursuant to this Agreement
shall be subject to such  notices to,  and/or  approvals  by, the Service or the
PBGC (or any other  governmental  agency or  entity) as are  required  or deemed
appropriate by such Employee Benefit Plan's sponsor. Each of Corporation and IMS
Health  agrees  to use its  commercially  reasonable  efforts  to cause all such
notices and/or approvals to be filed or obtained, as the case may be. Each party
hereto shall  reasonably  cooperate  with the other  parties with respect to any
government filings,  employee notices or any other actions reasonably  necessary
to maintain and implement the Employee Benefit Plans covered by this Agreement.



                                                                              27


     SECTION  13.20.  Further  Assurances.  From  time  to  time,  as  and  when
reasonably  requested by any other party hereto, each party hereto shall execute
and  deliver,  or cause to be executed and  delivered,  all such  documents  and
instruments  and shall  take,  or cause to be taken,  all such  further or other
actions as such other party may reasonably deem necessary or desirable to effect
the purposes of this Agreement and the transactions contemplated hereunder.





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


                                COGNIZANT CORPORATION


                                  by

                                     /s/ Robert E. Weissman
                                     ---------------------------------
                                     Name:  Robert E. Weissman
                                     Title: Chairman and Chief Executive Officer


                                IMS HEALTH INCORPORATED

                                  by

                                     /s/ Victoria R. Fash
                                     ---------------------------------
                                     Name:  Victoria R. Fash
                                     Title: Chief Operating Officer






                   Schedule 1.1 to Employee Benefits Agreement



IMS HEALTH Retirees
- - -------------------

Tom Crawford





                   Schedule 2.2 to Employee Benefits Agreement



                                                                                         Target % of
Investment Manager                        Fund Name                                      Portfolio (1)
- - ------------------                        ---------                                      -------------
                                                                                        
Barclays Global Investors                 US Debt Index Fund                                34.5%

Barclays Global Investors                 US Equity Index Fund                              27.5%

J.P. Morgan Investment Management         Research Optimized Equity Fund                    27.5%

Wellington Trust Company, N.A.            International Research Equity Fund                10.0%

Bank of New York                          Cash/Collective Trust Fund                         0.5%
                                          Short Term Investment Fund


- - ----------
(1)  The actual percent of the portfolio for any one fund may vary plus or minus
     three percentage points compared to the target percentages.




                   Schedule 6.1 to Employee Benefits Agreement


William G. Jacobi:
- - ------------------

The following  Corporation Stock Options of Mr. Jacobi shall remain  outstanding
(and be  adjusted as provided  for in this  Agreement),  with the balance of his
options to be converted to IMS Health Options:


Purchased Options (vest 11/15/02)           20,834

Regular Options (vest 11/15/02)             45,834

Regular Options (vest 11/15/01)             33,332
                                           -------
                                           100,000

James R. Peterson:
- - ------------------

Directors' Options                           2,000 Corporation

                                             5,000 IMS HEALTH

M. Bernard Puckett:
- - -------------------

The Directors'  options held by Mr. Puckett shall be cancelled and replaced with
IMS HEALTH options and  Corporation  options in proportion to the relative value
of a share of IMS HEALTH Common Stock and Corporation  Common Stock  immediately
after the Distribution,  based on the average of the high and low trading prices
of each such share for the five  trading  days  starting on the first IMS Health
"regular-way" and Corporation "ex-dividend" trading dates.





                   Schedule 7.1 to Employee Benefits Agreement


1    Corporation  shall,  as soon  as  practicable  after  the  Effective  Time,
     transfer the Corporation multinational insurance pooling arrangement to IMS
     Health,  which shall be entitled to all dividends  payable thereon from and
     after the Effective Time.

2    IMS Health shall  continue to maintain  Harry  Holland and Richard James on
     the IMS Health U.K.  payroll,  and, as  promptly as  practicable  after the
     Effective  time,  shall  transfer  (i)  related  pension  assets  for these
     individuals to individual  pension  accounts to be established  for them by
     Corporation,  based on national  valuations to be prepared by Watson Wyatt,
     and (ii) the lease contracts for the 2 automobiles used by said individuals
     to Corporation.  Corporation  shall be responsible for, and shall reimburse
     IMS Health U.K. for, all costs and expenses  associated  with the continued
     employment  of said  individuals,  including  without  limitation,  salary,
     benefits,   pension,  social  security,  taxes,  insurance  and  automobile
     expenses,  and  shall  indemnify  and  hold  harmless  IMS  Health  and its
     Affiliates from any and all  liabilities  relating to or arising out of the
     employment of said  individuals,  except for those arising out of the gross
     negligence or willful misconduct of IMS Health U.K.