Files with dd extension are used by the Dataflex program.
DD file extension - Dataflex data dictionary
What is dd file? How to open dd files?
File type specification:
The dd file extension is associated with the Dataflex. The .dd file is a synonym for a DataFlex Data_Set - an object that encapsulates the interface to a DataFlex datafile. All interaction with a DataFlex datafile should ideally occur through a Data Set Object.
The default software associated to open dd file:
Company or developer:
The Database Managers, Inc.
Relational, 4GL Object Oriented database programming language, DataFlex is used to run database programs without being recompiled, across Windows and Unix platforms.
List of recommended software applications associated to the .dd 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 dd file, edit dd file, convert dd file, view dd file, play dd file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with dd file - Dataflex data dictionary
Click on the software link for more information about DataFlex. DataFlex uses dd file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).