Multiple index file (dBase IV)
MDX is a data file format used by dBASE IV. MDX files are multiple index files which are used to hold database information. Many .MDX files are created along side a .DBF file. MDX files can be opened by dBASE and Borland InterBase programs.
MIME: application/dbase, application/x-dbase
Learn more about .MDX files:
Visit the dBase web page.
Search for .MDX-related questions on IT Knowledge Exchange.