What is MDB? MDB, short name for Microsoft Database, is used as the file extension for Microsoft Access database files. .MDB files are binary files that can be opened by Microsoft Access or Apache OpenOffice software. See the sample .MDB file included below.

File Extension: .MDB

MIME Type: application/msaccess, application/x-msaccess, application/mdb, application/x-mdb

File Content: Microsoft Access database

.MDB files are Microsoft database files saved as binary files. Here are the first 64 bytes of a sample .MDB file dumped in HEX values:

00 01 00 00 53 74 61 6e 64 61 72 64 20 4a 65 74 ....Standard.Jet
20 44 42 00 01 00 00 00 b5 6e 03 62 60 09 c2 55 .DB......n.b...U
e9 a9 67 72 40 3f 00 9c 7e 9f 90 ff 85 9a 31 c5 ..gr..........1.
79 ba ed 30 bc df cc 9d 63 d9 e4 c3 9f 46 fb 8a y..0....c....F..

.MDB Microsoft database file sample: Click sample.mdb to download.

.MDB Microsoft database files can be created and modified by these software:

• MS Access 2010 - Creates and edits .MDB Microsoft Access database files.
• Apache OpenOffice - Opens and converts .MDB Microsoft Access database files to OpenOffice files.