What does the .mdf file extension mean?

Answer by  Dean (4035)

The .mdf extension stands for Media Disc (Image) File. Custom MDF files can also be created by a SQL Server database user. An .mdf might also be a supporting file for a translation memory used by Trados translation software. MDF is also a standard file format used by the automotive industry for storing measurement data.

Answer by  Kim7989 (111)

A .mdf file is usually a 'Media Disc Image File'. It is a CD or DVD image file created and used by Alcohol120% software. Other possibilities are an SQL Server Database file or a Measurement Data Format file which is used in automotive industry.