PCauthorities.com presents…
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
XDL - Extension Details
Date Added: April 09, 2008
File Extension:  .XDL
Description 1: .XDL is the file extension associated with the Oracle Expert Definition Language File. It is used to define the classes as well as structures of other files that were created by the Oracle Expert database optimization software program. The files are created every time Oracle Expert exports an instance, an environment, a schema or workload data.
File Type:   Text file
Mode: ASCII
Program(s) to Open:  Windows: Oracle Expert
Common:
Extension: