Notes about the MDD file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The MDD file type is primarily associated with 'Database Designer for MySQL' by MicroOLAP Technologies LTD. Database Designer for MySQL is a tool that allows you to build a database structure visually, see the complete picture (diagram) representing all the tables, references between them, views, and stored procedures within your database.