Microsoft's Visual Foxpro index
CDX is a file extension for an index file format used by Microsoft Visual FoxPro. CDX stands for "compound index" Visual FoxPro is a relational database with an object-oriented programming environment that comes with pre-written classes.
Learn more about CDX files:
Explore Visual Studio 2010.
Visit the Microsoft Visual FoxPro forums.
Find answers to FoxPro questions at IT Knowledge Exchange.