.DB File Extension

Generic database file that stores data in a structured format, typically with an arrangement of tables, table fields, field data types, and field values; can be created by various database programs and exported into different formats, such as .CSV files; may also be imported by multiple database programs.

Cache of thumbnail images that represent larger images in a Windows folder; stores small versions of images stored in a folder for quicker browsing; typically not seen unless the "Show invisible files" option is checked within the Windows view options.

Windows Thumbnail Cache files are named Thumbs.db by default. For more information about Windows Thumbs.db files, including how to prevent them from being created, follow these instructions.

Database file used on mobile devices such as Android, iOS, and Windows Phone 7 mobile phones; often stores contacts and SMS information but may store any type of device or application data; commonly stored in an SQLite database format but may also be locked or encrypted so the user cannot see the data directly.

DB files on mobile phones generally are not meant to be opened or edited manually, since they are support files that include information for the device or for an application.

One example of a DB file is sms.db, an iOS support file that stores the user's text messages (located in the /private/var/mobile/Library/SMS/ directory on the device). Another example of a DB file is consolidated.db, a database file on iOS devices that automatically tracks location information.

Database containing objects and other information used in games developed with the X-Ray Engine; used by S.T.A.L.K.E.R.: Clear Sky, S.T.A.L.K.E.R.: Shadow of Chernobyl, and other GSC Game World games; similar to .GCF files used by Valve-based games.

NOTE: X-Ray Engine Database files may also use the extensions ".db0," ".db1," ".db2," ".dba," ".dbb," ".dbc," etc.

Data file created by QQ, a Chinese online chatting program; may store the contact list or log of online chat sessions for a user account; used for storing application data locally and loading it through the program interface.

QQ DB files are typically saved to the \Program Files\Tencent\QQ\[Account number]\ directory.