mysql reatore
Whenever a database become corrupted, you can try using the repair database option in the WHM.
Just select the db and it will do the repair.
To repair from the cpanel, go to mysql databases and there is the repair option alongside each of the databases.
If you wish to have the database restored, the database backup in the daily backup will be at
/backup/cpbackup/daily/username/mysql/mysqldbname.sql
untar the backup at /backup/cpbackup/daily/username.tar.gz if you are having backup in zipped format.