Thanks for your replies.

Bill,

Should i use DBCC SHRINKFILE with the TRUNCATEONLY argument to release the unused space ?

Mike,

About that interesting command (sp_MSforeachtable), it's not working, am i missing something ? :

Server: Msg 201, Level 16, State 4, Procedure sp_MSforeachtable, Line 0

Procedure 'sp_MSforeachtable' expects parameter '@command1', which was not supplied.