.MDF File Extension

CD or DVD data saved as a disc image by a disc authoring program such as Alcohol 120%; similar to an .ISO file, but saved in a different format; actual disc data is stored in the MDF file, while the header and track information is stored in a corresponding .MDS file.

Primary database file format used by Microsoft SQL Server, an enterprise-level database program; used for database files installed with SQL Server and related add-ons; custom MDF files may also be created by the user.

Standard file format used by the automotive industry for storing measurement data; contains raw measurement data from a measurement and the metadata necessary to interpret the raw data.

Supporting file for a translation memory used by Trados translation software; enables fast look up of data within the translation memory.

A translation memory (TM) includes five file types including MDF, .TMW, .IIX, .MTF, and .MWF files.