Question

The file extension for Access 2007 and 2010 database filenames is .accdb. What is the file extension for older versions of Access database files.

Answer 1

The earlier file format was the .mdb file format. If a person has a file that is stored in the .mdb format and gets a new version of Access or needs an upgrade, he or she may choose not to upgrade due to the fact that he or she will not be able to make design changes to the .mdb file.