.mdf File Extension
File Type 1SQL Server Database File
| Developer | Microsoft |
| Category | Database files |
| File Format | N/A |
.MDF Type 1
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. MDF files are often referred to as SQL Server data files because this type of file is primarily created or used by SQL Server.
Programs that open MDF files
File Type 2Media Disc Image File
| Developer | Alcohol Software |
| Category | Disk image files |
| File Format | N/A |
.MDF Type 2
MDF files may also be accompanied by .MDS files, which contain metadata about the MDF files. they include information, such as where the disc layers begin and end and copyright information. MDF files allow you to play the media contained on a CD or DVD without having the actual disc in your computer's CD or DVD drive. To ensure that the CD or DVD data plays back appropriately, the .MDF files should be saved with a related MDS file. There is a lot of software that uses MDF files to store disc image data. Some of them are Alcohol 120%, MagicISO, IsoBuster, WinMount, DAEMON Tools, and PowerISO.
File Type 3Measurement Data Format File
| Developer | Vector |
| Category | Data files |
| File Format | Binary |
.MDF Type 3
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.
NOTE: The Vector MDF Validator is used for validating MDF files.
File Type 4Translation Memory Data Find File
| Developer | SDL |
| Category | Miscellaneous Files |
| File Format | N/A |
.MDF Type 4
Supporting file for a translation memory used by Trados translation software; enables fast look up of data within the translation memory.
| Windows |
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