File written in DarkBASIC, a programming language provided by The Game Creators for developing 3D Windows computer games; contains source code and uses syntax based on the BASIC language; can be compiled and run using the DarkBASIC IDEs.

DBA files may be an entire game or part of a game. They are referenced within a DarkBASIC project (.DBPRO file) and are compiled with any other DBA files and game assets into a resulting .EXE executable. DarkBASIC can be used for developing first-person shooters, puzzle games, virtual worlds, fighting games, and more. The games can use Microsoft DirectX technology for generating 3D environments.

Backup file created for Palm mobile devices; contains a backup of calendar data, known as the "datebook," which includes scheduled events and their associated notes and information; can be used to synchronize data between Palm devices and desktop calendar and email programs.

DBA files can be converted into more portable formats, such as .CSV, and imported into common email applications like Microsoft Outlook.