Databases are proprietary file types that often cannot be backed up in the conventional manner. In CCC, you can leverage a preflight shell script to perform an "out of band" backup of various databases using database-specific tools. The CCC backup task will subsequently back up the database archive files, from which you could restore the database at a later time.
The following pre-clone shell script will dump the contents of any MySQL databases. In the event that your standard backup of the database doesn't open, you can later restore it from the dump.