ACCDB files consist of common database files, so you may already have a program which will open the file.įor the Windows operating system, you can open the ACCDB file extension using Microsoft Access 2010. Since ACCDB files can be opened using multiple database management programs and applications, double click on the file to see if it will automatically open in a default program you have installed on your PC. The ACCDB file extension is the replacement extension for the previous MDB file used with earlier versions of Microsoft Access. ACCDB stands for Access Database and the file extension is used with the later versions of Microsoft Access. The file extension ACCDB is a database file type that contains text, numerical data, queries, database structures, and other elements that are used with a database application. Microsoft Access can be used as part of Office Professional or as a standalone application which provides a database management system specially designed by Microsoft. The file extension ACCDB is associated with Microsoft Access, which is part of the Microsoft Office Professional Suite of applications.