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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
MDF - Extension Details
Date Added: January 01, 1970
File Extension:  .MDF
Description 1: .MDF file extension is linked with Measurement Data Format File. It is the standard file format utilized by the automotive industry for measurement data storage. It also contains raw measurement data from [from a data measurement] and the necessary metadata to read the raw data. The standard .MDF format is supported by various programs.
Description 2: .MDF file extension is linked with SQL Server Database File. This is the main database file format utilized by Microsoft SQL Server which is an enterpriselevel database application. It is used for database files that are installed with SQL Server and addons. Users can also generate their own custom .MDF files.
Description 3: .MDF file extension is linked with IDEAS Master Drafting Machine Data File. This is the file extension for the master drafting machine data file utilized/generated by IDEAS or Integrated Design and Engineering Analysis Software, is a computeraided design software package which was originally developed by Structural Dynamics Research Corporation. It is now owned by Siemens PLM Software, which is also the developer and owner of highend NX CAD/CAM/CAE PML solutions.
Description 4: .MDF file extension is linked with Insight II Molecular Data File. This is the file extension for the molecular data file utilized by Insight II a sophisticated molecular modeling environment which provides users powerful graphical interface to the best algorithms for homology modeling, molecular dynamics, de novo design and electrostatics. It is the perfect solution for computational chemistry, protein modeling and structural biology. Insight II is owned and developed by Accelrys Software Inc.
Description 5: .MDF file extension is linked with Fldigi Macro File. This file extension is for the macro file utilized by Fldigi a new application for FreeBSD and Linux that helps newbie radio operators to integrate their radio and computers to create a digital ham shack. This application lets users enjoy the advantages of sound card digital modes in newbie radio via Linux.
Description 6: .MDF file extension is linked with Alcohol 120% Disc image. .MDF file carries the actual Alcohol 120% disc image data, while the track information and header are stored in .MDS file extension which is a corresponding file. Alcohol 120% is a Windowsbased application that allows users to easily produce DVD/CD backups. It also allows users to store frequently used DVDs/CDs as computer images that can be easily called at the click of a mouse. .MDF file extension and Alcohol 120% are owned and developed by Alcohol Software.
Description 7: .MDF file extension is linked with ProWORX Nxt Memory Data File. This is the file extension for the memory data file utilized by ProWORX a flexible, userfriendly crossplatform programming application for Modiconranged PLCs. This application allows users: to program all Modicon controllers offline or online; manage I/O subsystems; analyze plants activity realtime. Modicon is a Windowsbased application.
File Type:   Data File
Mode: ASCII
Program(s) to Open:  Windows: ProWORX
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