The File Extensions Database


.DB File Extension

Category: Database Files Format: Binary

What is an .DB file?

.DB is Mobile Device Database File

A DB file is a database file used on mobile devices such as Android, iOS, and Windows Phone 7 mobile phones. It is often used to store contacts and SMS information but may store any type of device or application data. DB files are 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.

Programs that open Mobile Device Database File
Windows
SQLite
Mac
SQLite
Linux
SQLite
iOS
Apple iOS
File Type 2 Windows Thumbnail Cache
Developer by: Microsoft Category: Misc Files

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.

Common DB Filenames

Thumbs.db - A hidden file created by Windows for storing thumbnails of images in a folder. It can be deleted, but Windows will remake the file.

Programs that open Windows Thumbnail Cache
Windows
Microsoft Windows
File Type 3 Database File
Category: Database Files Format: Binary

A DB file is a generic database file that stores data in a structured format, typically with an arrangement of tables, table fields, field data types, and field values. It can be created by various database programs and exported into different formats, such as .CSV files. DB files may also be imported by multiple database programs and is used for gaming files as well.

Programs that open Database File
Windows
Microsoft Access 2016
LibreOffice
Synopsys Design Compiler Graphical
SQLite
Aryson SQLite Database Recovery
Mac
SQLite
LibreOffice
Linux
SQLite
LibreOffice
File Type 4 QQ Account Database File
Developer by: Tencent Category: Data Files Format: Binary

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.

Programs that open QQ Account Database File
Windows
Tencent QQ
File Type 5 X-Ray Engine Database
Developer by: GSC Game World Category: Game Files

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.

File Type 6 Skype Chat History File
Developer by: Skype Category: Data Files Format: Text

Chat history file created and used by Skype, an application that allows you to make phone calls, messages, and video chats; contains your conversation history, which includes all the instant messages and call details that a user has sent to and received from contacts.

NOTE: You can transfer your Skype chat history to another device by replacing the main.db file on the new device with the main.db file that contains the chat history you want to keep.

Common DB Filenames

main.db - Name of the main file that contains chat history messages.

Programs that open Skype Chat History File
Windows
Microsoft Skype
Mac
Microsoft Skype
Linux
Microsoft Skype

How to solve problems with DB files

  • Associate the DB file extension with the correct application. On :
    Windows: Right click on any DB file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.DB files". Mac: Right click (or Ctrl-click) the DB file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .DB is Mobile Device Database File. Because only the current version supports the latest DB file format. Search, therefore, e.g. on the N/A manufacturer website after an available .DB is Mobile Device Database File update.
  • To make sure that your DB file is not corrupted or virus-infected, get the file again and scan it with antivirus software.

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