File type: Borland Paradox database
In general, the DB file extension references a generic database file used for the storage of various types of information using a structured format.
This file with .db extension may be generated by a number of varying database applications or can be imported into different database software.
More specifically, the .db format is the default used by the Borland Paradox database. This program is considered as an RDBMS (Relational Database Management System) that was originally developed by Borland until it was acquired by Corel Corporation.
This is perhaps one of the oldest commercially available database applications in the market having been launched during the DOS era by the Ansa Software in 1985.
Borland officially released the Windows-based version of this application in 1992. The DB file extension supported the highly successful database application which was subsequently retooled under the Borland C++ windowing toolkit and eventually utilized a different extended memory access scheme.
This program was distinguished from the xBase clones of dBase by its visual Query By Example functionality which was supported by its AI engine.
Oracle database also creates files with .db extension.
How to open db files