.ACCDB File Extension

An ACCDB file is a database created by Microsoft Access 2007 or later. It typically contains data organized into tables and fields and may also include custom forms, SQL queries, and other data. The ACCDB format replaced Microsoft Access's previous database format, .MDB.

The ACCDB format is similar to the MDB format it replaced. However, the ACCDB format supports additional functionality, such as:

• The ability to store file attachments and other binary data
• Multi-valued field support
• Database encryption
• Calculated columns
• Integration with Microsoft Outlook and SharePoint

Windows users can open ACCDB files in Microsoft Access. Access 2007 and later versions can open ACCDB files. Mac users can open ACCDB files in MDB Viewer. MDB Viewer supports ACCDB files created by Access 2007, 2010, and 2013.