An mdx file extension is used by Microsoft SQL Severs for files that contain database indexes. Indexing is a feature of many database systems, that improve the speed of accessing the databases.

There are 6 other file types using
the MDX file extension!

mdx icon.mdx - Media Data eXtended image [common]

mdx icon.mdx - Blizzard Entertainment 3D model

empty icon.mdx - MDict dictionary data

empty icon.mdx - IBM Rational XDE model

empty icon.mdx - IBM WORKS for OS/2 file

empty icon.mdx - X68000 midi file

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MDX file - Microsoft database index

What is mdx file? How to open mdx files?

File type specification:

Various data file type icon Various data file type

The mdx file extension is associated with Microsoft SQL Server. File contains database index. Database indexing enables full text indexing of Microsoft SQL Server and Access databases using ODBC and Active Server Pages (ASP).

MDX extension is also used in other programs for their database indexes. Including Borland, or dBase. These just share the same extension and purpose but are otherwise unrelated to Microsoft's MDX format.

The default software associated to mdx file type:

Microsoft SQL Server icon

Microsoft Corporation logoMicrosoft SQL Server  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft SQL Server is set of relational database applications and tools used to create, organize and manage SQL databases. Microsoft SQL Server primary supports T-SQL and ANSI SQL query languages. SQL Server is distributed in many editions, with different features.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:


List of software applications associated to the .mdx file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open mdx file, edit mdx file, convert mdx file, view mdx file, play mdx file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is ableto perform the specified software action, such as opening, editing or converting mdx files.

  • Create mdx file
  • Others mdx file

Programs that can create mdx file - Microsoft database index

Programs supporting the exension mdx on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for create mdx file action.

Microsoft Windows:

Main software associated with mdx file by default:
Microsoft SQL Server small icon Microsoft SQL Server
Other suggested software:
dBASE small icon dBASE

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