<PAGE>   1

     As filed with the Securities and Exchange Commission on July 24, 2000
                                                      Registration No. 333-_____
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM S-8

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

             ------------------------------------------------------
                             INFORMATICA CORPORATION
             (Exact name of Registrant as Specified in Its Charter)
             ------------------------------------------------------

          DELAWARE                                         77-0333710
 (State or Other Jurisdiction                           (I.R.S. Employer
of Incorporation or Organization)                      Identification No.)

                              3350 W. BAYSHORE ROAD
                               PALO ALTO, CA 94303
                    (Address of Principal Executive Offices)

                       2000 EMPLOYEE STOCK INCENTIVE PLAN

                            (Full Title of the Plans)

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

                                GAURAV S. DHILLON
                             CHIEF EXECUTIVE OFFICER

                             INFORMATICA CORPORATION
                              3350 W. BAYSHORE ROAD
                               PALO ALTO, CA 94303
                     (Name and Address of Agent for Service)

                                 (650) 687-6200
          (Telephone Number, Including Area Code, of Agent For Service)

                                    Copy to:
                               CORI M. ALLEN, ESQ.
                             MORRISON & FOERSTER LLP
                               755 PAGE MILL ROAD
                               PALO ALTO, CA 94304
                                 (650) 813-5600

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

                         CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
=================================================================================================
<S>                       <C>             <C>                <C>                  <C>
                                                                 Proposed           Proposed
                            Amount            Maximum             Maximum           Amount of
 Title of Securities        to be         Offering Price     Aggregate Offering   Registration
  to be Registered        Registered       Per Share(1)           Price(1)            Fee
-------------------------------------------------------------------------------------------------
Common Stock, $.001
par value per share       800,000          $84.03125           $67,225,000         $17,747.40
=================================================================================================
</TABLE>

(1) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457(h) and Rule 457(c) under the Securities Act of 1933, as
    amended, the proposed maximum offering price per share and the proposed
    aggregate maximum offering price have been determined on the basis of the
    high and low prices quoted on Nasdaq National Market on July 18, 2000.

    In addition, pursuant to Rule 416(c) under the Securities Act, this
    Registration Statement also covers an indeterminate amount of interests to
    be offered or sold pursuant to the employee benefit plans described herein.

================================================================================


<PAGE>   2

                                     PART I

                           INFORMATION REQUIRED IN THE
                            SECTION 10(a) PROSPECTUS


        The documents containing the information specified in Part I of Form S-8
(plan information and registrant information and employee plan annual
information) will be sent or given to employees as specified by Securities and
Exchange Commission Rule 428(b)(1). Such documents need not be filed with the
Securities and Exchange Commission either as part of this Registration Statement
or as prospectuses or prospectus supplements pursuant to Rule 424. These
documents and the documents incorporated by reference in this Registration
Statement pursuant to Item 3 of Form S-8 (Part II hereof), taken together,
constitute a prospectus that meets the requirements of Section 10(a) of the
Securities Act of 1933.



                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT


ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

        The following documents filed by Informatica Corporation (the
"Registrant") with the Securities and Exchange Commission (the "Commission") are
incorporated by reference herein:

        (1) The Registrant's Annual Report on Form 10-K for the fiscal year
ended December 31, 1999, filed pursuant to Section 13 of the Securities Exchange
Act of 1934, as amended (the "Exchange Act").

        (2) The Registrant's Quarterly Report on Form 10-Q for the quarter ended
March 31, 2000.

        (3) The description of the Registrant's Common Stock which is contained
in its Registration Statement on Form 8-A dated April 26, 1999 (File No.
000-22369), filed under the Exchange Act, including any amendment or report
filed for the purpose of updating such description.

        All documents filed by the Registrant with the Commission pursuant to
Section 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this
Registration Statement but prior to the filing of a post-effective amendment
which indicates that all securities offered have been sold or which deregisters
all securities then remaining unsold, shall be deemed to be incorporated by
reference into this Registration Statement and to be a part hereof from the date
of filing of such documents. Any statement contained in a document incorporated
by reference herein shall be deemed to be modified or superseded for purposes of
this Registration Statement to the extent that a statement contained herein or
in any other subsequently filed document which also is or is


                                       2
<PAGE>   3

deemed to be incorporated by reference herein modifies or supersedes such
statement. Any statement so modified or superseded shall not be deemed, except
as so modified or superseded, to constitute a part of this Registration
Statement.

ITEM 4. DESCRIPTION OF SECURITIES.

        Not applicable.

ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL.

        Not applicable.

ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

        The indemnification and liability of the Registrant's directors and
officers are governed by Delaware law.

        Under Section 145 of the General Corporation Law of the State of
Delaware, the Registrant has broad powers to indemnify its directors and
officers against liabilities that they may incur in such capacities, including
liabilities under the Securities Act of 1933, as amended (the "Securities Act").
The Registrant's Bylaws also provide for mandatory indemnification of its
directors and executive officers, and permissive indemnification of its
employees and agents, to the fullest extent permissible under Delaware law.

        The Registrant's Amended and Restated Certificate of Incorporation
provides that the liability of its directors for monetary damages shall be
eliminated to the fullest extent permissible under Delaware law. Pursuant to
Delaware law, this includes elimination of liability for monetary damages for
breach of the directors' fiduciary duty of care to the Registrant and its
stockholders. These provisions do not eliminate the directors' duty of care and,
in appropriate circumstances, equitable remedies such as injunctive or other
forms of non-monetary relief will remain available under Delaware law. In
addition, each director will continue to be subject to liability for breach of
the director's duty of loyalty to the Registrant' for acts of omissions not in
good faith or involving intentional misconduct, for knowing violations of law,
for any transaction from which the director derived an improper personal
benefit, and for payment of dividends or approval of stock repurchases or
redemptions that are unlawful under Delaware law. The provision also does not
affect a director's responsibilities under any other laws, such as the federal
securities laws or state or federal environmental laws.

        The Registrant has entered into agreements with its directors and
certain of its executive officers that require the Registrant to indemnify such
persons against expenses, judgments, fines, settlements and other amounts
actually and reasonably incurred (including expenses of a derivative action) in
connection with any proceeding, whether actual or threatened, to which any such
person may be made a party by reason of the fact that such person is or was a
director or officer of the Registrant or any of its affiliated enterprises,
provided such person acted in good faith and in a manner such person reasonably
believed to be in or not opposed to the best interests of the Registrant and,
with respect to any criminal proceeding, had no reasonable cause


                                       3
<PAGE>   4

to believe his or her conduct was unlawful. The indemnification agreement also
sets forth certain procedures that will apply in the event of a claim for
indemnification thereunder.

        The Registrant has obtained a policy of directors' and officers'
liability insurance that insures the Registrant's directors and officers against
the cost of defense, settlement or payment of a judgment under certain
circumstances.

ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED.

        Not applicable.

ITEM 8. EXHIBITS.

        4.1    Form of Certificate of Incorporation of the Registrant
               (incorporated by reference to Exhibit 3.2 to the Registrant's
               Registration Statement on Form S-1 (Commission File No.
               333-72677) which became effective on April 28, 1999 (the
               "Registration Statement on Form S-1")).

        4.2    Registrant's Amended and Restated Bylaws (incorporated by
               reference to Exhibit 3.3 to the Registration Statement on Form
               S-1).

        5.1    Opinion of Morrison & Foerster LLP.

        23.1   Consent of Morrison & Foerster LLP (contained in Exhibit 5.1).

        23.2   Consent of Ernst & Young LLP, Independent Auditors.

        24.1   Power of Attorney (See page 6).

ITEM 9. UNDERTAKINGS.

        (a) The undersigned Registrant hereby undertakes:

            (1) To file, during any period in which offers or sales are being
made, a post-effective amendment to this Registration Statement:

                (i) To include any prospectus required by Section 10(a)(3) of
the Securities Act;

                (ii)To reflect in the prospectus any facts or events arising
after the effective date of the Registration Statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in the Registration
Statement;

                (iii) To include any material information with respect to the
plan of distribution not previously disclosed in this Registration Statement or
any material change to such information in the Registration Statement.


                                       4
<PAGE>   5

        Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply
if this Registration Statement is on Form S-3 or Form S-8 and the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed by the Registrant pursuant to Section 13 or
Section 15(d) of the Exchange Act that are incorporated by reference in this
Registration Statement.

            (2) That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered herein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

            (3) To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

        (b) The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

        (c) Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of the Registrant pursuant to the foregoing provisions or otherwise, the
Registrant has been advised that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act, and
is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question of whether such indemnification by it is against
public policy as expressed in the Securities Act and will be governed by the
final adjudication of such issue.


                                       5
<PAGE>   6

                                   SIGNATURES

        Pursuant to the requirements of the Securities Act, Informatica
Corporation certifies that it has reasonable grounds to believe that it meets
all the requirements for filing on Form S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Palo Alto, State of California, on July 21,
2000.


                                      INFORMATICA CORPORATION

                                         By: /s/ GAURAV S. DHILLON
                                             -----------------------------------
                                             Gaurav S. Dhillon
                                             Chief Executive Officer, Secretary
                                             and Director

                                POWER OF ATTORNEY

        KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints, severally and not jointly, Gaurav S.
Dhillon and Earl E. Fry, with full power to act alone, his true and lawful
attorneys-in-fact, with the power of substitution, for him and in his name,
place and stead, in any and all capacities, to sign any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact full power and authority to do and perform each and every act
and thing requisite and necessary to be done as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming all
that said attorneys-in-fact may lawfully do or cause to be done by virtue
hereof.

        Pursuant to the requirements of the Securities Act, this Registration
Statement has been signed by the following persons in the capacities and on the
dates indicated:

<TABLE>
<CAPTION>
             Signature                                    Title                          Date
             ---------                                    -----                          ----
<S>                                      <C>                                      <C>
                                         Chief Executive Officer and Director     July 21, 2000
/s/ GAURAV S. DHILLON                    (Principal Executive Officer)
------------------------------------
         Gaurav S. Dhillon

                                         Chief Operating Officer, President and   July 24, 2000
/s/ DIAZ H. NESAMONEY                    Director
------------------------------------
         Diaz H. Nesamoney

                                         Chief Financial Officer (Principal       July 21, 2000
/s/ EARL E. FRY                          Financial and Accounting Officer)
------------------------------------
            Earl E. Fry
</TABLE>


                                       6
<PAGE>   7


<TABLE>
<CAPTION>
<S>                                      <C>                                      <C>
/s/ DAVID W. PIDWELL                     Director                                 July 24, 2000
------------------------------------
         David W. Pidwell

/s/ A. BROOKE SEAWELL                    Director                                 July 21, 2000
------------------------------------
         A. Brooke Seawell

                                         Director                                 July ___, 2000
------------------------------------
         Vincent R. Worms
</TABLE>



                                       7
<PAGE>   8

                                INDEX TO EXHIBITS



<TABLE>
<CAPTION>
EXHIBIT
NUMBER                       DESCRIPTION
-------                      -----------
<S>            <C>
4.1            Form of Certificate of Incorporation of the Registrant
               (incorporated by reference to Exhibit 3.2 to the Registrants'
               Registration Statement on Form S-1 (Commission File No. 333-72677
               which became effective on April 28, 1999 (the "Registration
               Statement on Form S-1")).

4.2            Registrant's Amended and Restated Bylaws (incorporated by
               reference to Exhibit 3.3 to the Registration Statement on
               Form S-1).

5.1            Opinion of Morrison & Foerster LLP.

23.1           Consent of Morrison & Foerster LLP (contained in Exhibit 5.1).

23.2           Consent of Ernst & Young LLP, Independent Auditors.

24.1           Power of Attorney (See page 6).
</TABLE>


                                       8
[{"type": "S-8", "sequence": "1", "filename": "s-8.txt", "description": "FORM S-8", "secsgml_size_bytes": 19189}]
{"company-data": {"conformed-name": "INFORMATICA CORP", "cik": "0001080099", "assigned-sic": "7372", "irs-number": "770333710", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-42118", "film-number": "677859"}, "business-address": {"street1": "3350 W BAYSHORE RD", "city": "PALO ALTO", "state": "CA", "zip": "94303", "phone": "6506876200"}, "mail-address": {"street1": "3350 W BAYSHORE RD", "city": "PALO ALTO", "state": "CA", "zip": "94303"}}
1

     As filed with the Securities and Exchange Commission on July 24, 2000
                                                      Registration No. 333-_____
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM S-8

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

             ------------------------------------------------------
                             INFORMATICA CORPORATION
             (Exact name of Registrant as Specified in Its Charter)
             ------------------------------------------------------

          DELAWARE                                         77-0333710
 (State or Other Jurisdiction                           (I.R.S. Employer
of Incorporation or Organization)                      Identification No.)

                              3350 W. BAYSHORE ROAD
                               PALO ALTO, CA 94303
                    (Address of Principal Executive Offices)

                       2000 EMPLOYEE STOCK INCENTIVE PLAN

                            (Full Title of the Plans)

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

                                GAURAV S. DHILLON
                             CHIEF EXECUTIVE OFFICER

                             INFORMATICA CORPORATION
                              3350 W. BAYSHORE ROAD
                               PALO ALTO, CA 94303
                     (Name and Address of Agent for Service)

                                 (650) 687-6200
          (Telephone Number, Including Area Code, of Agent For Service)

                                    Copy to:
                               CORI M. ALLEN, ESQ.
                             MORRISON & FOERSTER LLP
                               755 PAGE MILL ROAD
                               PALO ALTO, CA 94304
                                 (650) 813-5600

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

                         CALCULATION OF REGISTRATION FEE
=================================================================================================
Proposed           Proposed
                            Amount            Maximum             Maximum           Amount of
 Title of Securities        to be         Offering Price     Aggregate Offering   Registration
  to be Registered        Registered       Per Share(1)           Price(1)            Fee
-------------------------------------------------------------------------------------------------
Common Stock, $.001
par value per share       800,000          $84.03125           $67,225,000         $17,747.40
=================================================================================================
(1) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457(h) and Rule 457(c) under the Securities Act of 1933, as
    amended, the proposed maximum offering price per share and the proposed
    aggregate maximum offering price have been determined on the basis of the
    high and low prices quoted on Nasdaq National Market on July 18, 2000.

    In addition, pursuant to Rule 416(c) under the Securities Act, this
    Registration Statement also covers an indeterminate amount of interests to
    be offered or sold pursuant to the employee benefit plans described herein.

================================================================================
2

                                     PART I

                           INFORMATION REQUIRED IN THE
                            SECTION 10(a) PROSPECTUS

        The documents containing the information specified in Part I of Form S-8
(plan information and registrant information and employee plan annual
information) will be sent or given to employees as specified by Securities and
Exchange Commission Rule 428(b)(1). Such documents need not be filed with the
Securities and Exchange Commission either as part of this Registration Statement
or as prospectuses or prospectus supplements pursuant to Rule 424. These
documents and the documents incorporated by reference in this Registration
Statement pursuant to Item 3 of Form S-8 (Part II hereof), taken together,
constitute a prospectus that meets the requirements of Section 10(a) of the
Securities Act of 1933.

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

        The following documents filed by Informatica Corporation (the
"Registrant") with the Securities and Exchange Commission (the "Commission") are
incorporated by reference herein:

        (1) The Registrant's Annual Report on Form 10-K for the fiscal year
ended December 31, 1999, filed pursuant to Section 13 of the Securities Exchange
Act of 1934, as amended (the "Exchange Act").

        (2) The Registrant's Quarterly Report on Form 10-Q for the quarter ended
March 31, 2000.

        (3) The description of the Registrant's Common Stock which is contained
in its Registration Statement on Form 8-A dated April 26, 1999 (File No.
000-22369), filed under the Exchange Act, including any amendment or report
filed for the purpose of updating such description.

        All documents filed by the Registrant with the Commission pursuant to
Section 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this
Registration Statement but prior to the filing of a post-effective amendment
which indicates that all securities offered have been sold or which deregisters
all securities then remaining unsold, shall be deemed to be incorporated by
reference into this Registration Statement and to be a part hereof from the date
of filing of such documents. Any statement contained in a document incorporated
by reference herein shall be deemed to be modified or superseded for purposes of
this Registration Statement to the extent that a statement contained herein or
in any other subsequently filed document which also is or is

                                       2
3

deemed to be incorporated by reference herein modifies or supersedes such
statement. Any statement so modified or superseded shall not be deemed, except
as so modified or superseded, to constitute a part of this Registration
Statement.

ITEM 4. DESCRIPTION OF SECURITIES.

        Not applicable.

ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL.

        Not applicable.

ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

        The indemnification and liability of the Registrant's directors and
officers are governed by Delaware law.

        Under Section 145 of the General Corporation Law of the State of
Delaware, the Registrant has broad powers to indemnify its directors and
officers against liabilities that they may incur in such capacities, including
liabilities under the Securities Act of 1933, as amended (the "Securities Act").
The Registrant's Bylaws also provide for mandatory indemnification of its
directors and executive officers, and permissive indemnification of its
employees and agents, to the fullest extent permissible under Delaware law.

        The Registrant's Amended and Restated Certificate of Incorporation
provides that the liability of its directors for monetary damages shall be
eliminated to the fullest extent permissible under Delaware law. Pursuant to
Delaware law, this includes elimination of liability for monetary damages for
breach of the directors' fiduciary duty of care to the Registrant and its
stockholders. These provisions do not eliminate the directors' duty of care and,
in appropriate circumstances, equitable remedies such as injunctive or other
forms of non-monetary relief will remain available under Delaware law. In
addition, each director will continue to be subject to liability for breach of
the director's duty of loyalty to the Registrant' for acts of omissions not in
good faith or involving intentional misconduct, for knowing violations of law,
for any transaction from which the director derived an improper personal
benefit, and for payment of dividends or approval of stock repurchases or
redemptions that are unlawful under Delaware law. The provision also does not
affect a director's responsibilities under any other laws, such as the federal
securities laws or state or federal environmental laws.

        The Registrant has entered into agreements with its directors and
certain of its executive officers that require the Registrant to indemnify such
persons against expenses, judgments, fines, settlements and other amounts
actually and reasonably incurred (including expenses of a derivative action) in
connection with any proceeding, whether actual or threatened, to which any such
person may be made a party by reason of the fact that such person is or was a
director or officer of the Registrant or any of its affiliated enterprises,
provided such person acted in good faith and in a manner such person reasonably
believed to be in or not opposed to the best interests of the Registrant and,
with respect to any criminal proceeding, had no reasonable cause

                                       3
4

to believe his or her conduct was unlawful. The indemnification agreement also
sets forth certain procedures that will apply in the event of a claim for
indemnification thereunder.

        The Registrant has obtained a policy of directors' and officers'
liability insurance that insures the Registrant's directors and officers against
the cost of defense, settlement or payment of a judgment under certain
circumstances.

ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED.

        Not applicable.

ITEM 8. EXHIBITS.

        4.1    Form of Certificate of Incorporation of the Registrant
               (incorporated by reference to Exhibit 3.2 to the Registrant's
               Registration Statement on Form S-1 (Commission File No.
               333-72677) which became effective on April 28, 1999 (the
               "Registration Statement on Form S-1")).

        4.2    Registrant's Amended and Restated Bylaws (incorporated by
               reference to Exhibit 3.3 to the Registration Statement on Form
               S-1).

        5.1    Opinion of Morrison & Foerster LLP.

        23.1   Consent of Morrison & Foerster LLP (contained in Exhibit 5.1).

        23.2   Consent of Ernst & Young LLP, Independent Auditors.

        24.1   Power of Attorney (See page 6).

ITEM 9. UNDERTAKINGS.

        (a) The undersigned Registrant hereby undertakes:

            (1) To file, during any period in which offers or sales are being
made, a post-effective amendment to this Registration Statement:

                (i) To include any prospectus required by Section 10(a)(3) of
the Securities Act;

                (ii)To reflect in the prospectus any facts or events arising
after the effective date of the Registration Statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in the Registration
Statement;

                (iii) To include any material information with respect to the
plan of distribution not previously disclosed in this Registration Statement or
any material change to such information in the Registration Statement.

                                       4
5

        Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply
if this Registration Statement is on Form S-3 or Form S-8 and the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed by the Registrant pursuant to Section 13 or
Section 15(d) of the Exchange Act that are incorporated by reference in this
Registration Statement.

            (2) That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered herein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

            (3) To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

        (b) The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

        (c) Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of the Registrant pursuant to the foregoing provisions or otherwise, the
Registrant has been advised that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act, and
is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question of whether such indemnification by it is against
public policy as expressed in the Securities Act and will be governed by the
final adjudication of such issue.

                                       5
6

                                   SIGNATURES

        Pursuant to the requirements of the Securities Act, Informatica
Corporation certifies that it has reasonable grounds to believe that it meets
all the requirements for filing on Form S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Palo Alto, State of California, on July 21,
2000.

                                      INFORMATICA CORPORATION

                                         By: /s/ GAURAV S. DHILLON
                                             -----------------------------------
                                             Gaurav S. Dhillon
                                             Chief Executive Officer, Secretary
                                             and Director

                                POWER OF ATTORNEY

        KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints, severally and not jointly, Gaurav S.
Dhillon and Earl E. Fry, with full power to act alone, his true and lawful
attorneys-in-fact, with the power of substitution, for him and in his name,
place and stead, in any and all capacities, to sign any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact full power and authority to do and perform each and every act
and thing requisite and necessary to be done as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming all
that said attorneys-in-fact may lawfully do or cause to be done by virtue
hereof.

        Pursuant to the requirements of the Securities Act, this Registration
Statement has been signed by the following persons in the capacities and on the
dates indicated:
Signature                                    Title                          Date
             ---------                                    -----                          ----
Chief Executive Officer and Director     July 21, 2000
/s/ GAURAV S. DHILLON                    (Principal Executive Officer)
------------------------------------
         Gaurav S. Dhillon

                                         Chief Operating Officer, President and   July 24, 2000
/s/ DIAZ H. NESAMONEY                    Director
------------------------------------
         Diaz H. Nesamoney

                                         Chief Financial Officer (Principal       July 21, 2000
/s/ EARL E. FRY                          Financial and Accounting Officer)
------------------------------------
            Earl E. Fry
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/s/ DAVID W. PIDWELL                     Director                                 July 24, 2000
------------------------------------
         David W. Pidwell

/s/ A. BROOKE SEAWELL                    Director                                 July 21, 2000
------------------------------------
         A. Brooke Seawell

                                         Director                                 July ___, 2000
------------------------------------
         Vincent R. Worms
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                                INDEX TO EXHIBITS
EXHIBIT
NUMBER                       DESCRIPTION
-------                      -----------
4.1            Form of Certificate of Incorporation of the Registrant
               (incorporated by reference to Exhibit 3.2 to the Registrants'
               Registration Statement on Form S-1 (Commission File No. 333-72677
               which became effective on April 28, 1999 (the "Registration
               Statement on Form S-1")).

4.2            Registrant's Amended and Restated Bylaws (incorporated by
               reference to Exhibit 3.3 to the Registration Statement on
               Form S-1).

5.1            Opinion of Morrison & Foerster LLP.

23.1           Consent of Morrison & Foerster LLP (contained in Exhibit 5.1).

23.2           Consent of Ernst & Young LLP, Independent Auditors.

24.1           Power of Attorney (See page 6).
8