Notes about the IBD 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 IBD file type is primarily associated with 'MySQL - InnoDB' by Sun Microsystems, Inc.. InnoDB tables and indexes can be stored in their own file (a feature called "multiple tablespaces" since in this way each table uses its own tablespace). If you have multiple tablespaces enabled, InnoDB will store the newly created table in a *.ibd file in the database directory where also belongs the table.