107 Microsoft Access Database File 2.0 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 2.0 of MDB file format, for a full list of versions please follow the links provided in the Notes section. Text 1 Digital Preservation Department / The National Archives 02 Aug 2005 02 May 2023 fdd000462 Library of Congress Format Description Identifier Q48004607 Wikidata QID Identifier x-fmt/66 PUID mdb File extension mda File extension 270 Microsoft Access Database File 2.0 BOF; Offset: 0; Magic Bytes: Access database header 0x01000000, then an exact gap of 1026 bytes followed by 0x5269636809 1 Absolute from BOF 0 Little-endian 01000000{1026}5269636809 Is previous version of 350 Microsoft Access Database File Is subsequent version of 2657 Microsoft Access Database File Is supertype of 2660 Microsoft Access Encrypted Database File