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Format

dBASE Database

Summary

Name
dBASE Database
Version
III+
Identifiers
PUID: x-fmt/271
Format type
Database
Description
dBase is a database management systems for microcomputers.The dBase system includes the core database engine, a query system, a forms engine, and a programming language that ties all of these components together. dBase's underlying file format, the .dbf file, is widely used in applications needing a simple format to store structured data.
File extensions
dbf
Source
Digital Preservation Department / The National Archives
Developed by
dBASE Inc.
Supported by
dBASE Inc.

Internal signatures

dBase Table with dbt Version III+

Note
dbt Flag(Bit 7 of first byte), Version number(bits 0-2 of first byte), Date of last update MMDD, First upper or lowercase character of field name, field type (C, D, L, M, N). Memo fields in the dbf and a flag indicating the existence of a database text (.dbt) file were already a part of the dbase III dbf file format.

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
None
Byte Sequence
83??[01:0C][01:1F]{28}([41:5A]|[61:7A]){10}(43|44|4C|4D|4E)
Endianness
None

Changelog

  • Updated in V112

    Release date
    10 May 2023

    dBASE Database III+: Added developer. Submitted by Digital Preservation Department, The National Archives (UK).

  • Updated in V83

    Release date
    17 December 2015

    dBASE Database III+: Added description.

  • Added in V46

    Release date
    8 February 2011

    dBASE Database III+: Existing signature refined through PRONOM Research.

  • Added in V45

    Release date
    6 December 2010

    dBASE Database III+: Signature submitted by Georgia Tech Research Institute, USA.