The File Extensions Database


.DB4 File Extension

  • Developer by: dataBased Intelligence, Inc.
  • Category: Database Files

What is an .DB4 file?

.DB4 is dBASE IV data

The db4 file extension is also used by dBASE IV, a database management system for some of its database files.

Most like format used in older version for MS-DOS and not used nowadays.

This db4 file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.


How to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .db4 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

How to solve problems with DB4 files

  • Associate the DB4 file extension with the correct application. On :
    Windows: Right click on any DB4 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.DB4 files". Mac: Right click (or Ctrl-click) the DB4 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 .DB4 is dBASE IV data. Because only the current version supports the latest DB4 file format. Search, therefore, e.g. on the dataBased Intelligence, Inc. manufacturer website after an available .DB4 is dBASE IV data update.
  • To make sure that your DB4 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.