EXHIBIT 31.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, James T. Barry, certify that:

1.   I have reviewed this annual report on Form 10-K of Megadata Corporation;

2.   Based on my knowledge, this annual 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 annual 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
     annual 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 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 annual report
          is being prepared;

     (b)  Evaluated the effectiveness of the registrant's disclosure controls
          and procedures and presented in this report our conclusions about the
          effectiveness of the disclosure controls and procedures, as of the end
          of the period covered by this annual report based on such evaluation;
          and

     (c)  Disclosed in this annual report any change in the registrant's
          internal control over financial reporting that occurred during the
          registrant's most recent fiscal quarter (the registrant's fourth
          quarter in the case of an annual report) that has materially affected,
          or is reasonably likely to materially affect, the registrant's
          internal control over financial reporting; and

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 the registrant's board of directors:

     (a)  All significant deficiencies and material weaknesses in the design or
          operation of internal controls over financial reporting which are
          reasonably likely to adversely affect the registrant's ability to
          record, process, summarize and report financial information; and

     (b)  Any fraud, whether or not material, that involves management or other
          employees who have a significant role in the registrant's internal
          control over financial reporting.

         Date: January 28, 2004

                                            By:   /s/ James T. Barry
                                            ------------------------
                                                  James T. Barry
                                                  Chief Executive Officer
                                                  (Principal Executive Officer)



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