|CERTIFICATIONS


I, John E. Bailye, certify that:


1.     
   I have reviewed this  quarterly report
on Form 10-Q of Dendrite International, Inc.;


2.     
   Based  on  my  knowledge,  this
quarterly  report does not contain any untrue  statement  of a material  fact or omit to
state a material fact necessary to make the statements made, in light of the
 circumstances  under which such  statements  were made, not misleading with respect to
the period covered by this quarterly report;



3.     
   Based on my knowledge, the
financial statements, and other financial           information included in this
quarterly report, fairly present in all material           respects the financial
condition, results of operations and cash flows of the           registrant as of, and
for, the periods presented in this quarterly report;


4.     
   The  registrants   other
certifying  officers and I are  responsible  for  establishing  and  maintaining
disclosure  controls and procedures (as defined in Exchange Act Rules 13a-14 and
15d-14) for the registrant and we have:
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (a)
             Designed
     such disclosure controls and procedures to ensure that material information relating
to the registrant,  including its  consolidated  subsidiaries,  is made known to us by
others within those entities,  particularly  during the period in which this quarterly
report is being prepared;
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (b)
              Evaluated the  effectiveness of
the registrants  disclosure controls and procedures as of a date within 90
days prior to the filing date of this  quarterly  report  (the  Evaluation
Date); and
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (c)          Presented in this quarterly
report our conclusions  about the  effectiveness of the disclosure  controls and
procedures based on our evaluation as of the Evaluation Date;
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|5.     
   The registrants other
certifying officers and I have disclosed, based on           our most recent evaluation,
to the registrants auditors and the audit           committee of registrants
board of directors (or persons performing the           equivalent function):
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (a)
                           All significant
deficiencies in the design or operation of internal controls           which could
adversely affect the registrants ability to record, process,           summarize
and report financial data and have identified for the           registrants
auditors any material weaknesses in internal controls; and
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (b)
                           Any fraud, whether or not
material, that involves management or other employees           who have a significant
role in the registrants internal controls; and
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|6.     
   The
registrants other certifying officers and I have indicated in this
          quarterly report whether or not there were significant changes in internal
          controls or in other factors that could significantly affect internal controls
          subsequent to the date of our most recent evaluation, including any corrective
          actions with regard to significant deficiencies and material weaknesses.



Date: August 13, 2003
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|JOHN E. BAILYE
John E. Bailye
Chairman and Chief Executive Officer |  | 
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