2658 Microsoft Access Encrypted Database File 1.0 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. Microsoft Access also allowed for "encrypting" a database, described as: "Encrypting a database compacts the database file and makes it indecipherable by a utility program or word processor. Decrypting a database reverses the encryption." Encrypted files have a common header with a version byte at the same offset as unencrypted files. This entry records the encrypted files of version 1.0 of MDB file format. For a full list of versions please follow the links provided in the Notes section. 220 The Church of Jesus Christ of Latter-Day Saints / The Church of Jesus Christ of Latter-Day Saints 05 Jan 2023 02 May 2023 fdd000462 Library of Congress Format Description Identifier fmt/1807 PUID Q117456796 Wikidata QID Identifier mdb File extension mda File extension 2145 Microsoft Access Encrypted Database File v1.0 BOF; Offset: 0; Magic Bytes: 0x772C5320, then an exact gap of 1030 bytes followed by 0x66 1 Absolute from BOF 0 0 772C5320{1030}66 Is previous version of 2659 Microsoft Access Encrypted Database File Is subtype of 2656 Microsoft Access Database File