Microsoft Access Database File 1.0

Unknown

database

Microsoft Access Database File, formerly known as Jet MDB Database format, is propriatory file format developed and used by Microsoft as a native format for its Microsoft Access (formerly Microsoft Jet Database Engine) desktop database management system. First released in 1992, starting with version 1.0 the earlier versions of the database used the Jet Database Engine, with version 1.0 having a maximum size of 128 megabytes, then increasing to 1 gigabyte with versions 1.1 and 2.0. This entry records the version 1.0 of MDB file format, for a full list of versions please follow the links provided in the Notes section.

Identify it

Extensions	`.mdb.mda`
Signatures	`01000000` at byte 0 (Microsoft Access Database File v1.0)
PRONOM	`fmt/1805`
Wikidata	`Q117456349`
Library of Congress	`fdd000462`

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PhotoRecOpen sourcereads · GNU General Public License
Microsoft Access 2000reads and writes
Q80689reads · proprietary license
GMDB2reads
Microsoft Access 2007reads
Microsoft Office Excel 2007reads
Recovery Toolboxreads
SPSSreads · proprietary license

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Sources

From PRONOM, Wikidata. Updated 2026-10-20.

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