I don't recommend using it, but if you realy feel the need of looking at your database, you can install MySQL Admin 1.2 from the add-on modules.
You should only use it to repair a table if one is damaged (never happend to me) or make a dump from the database (not such a bad idea before an upgrade, but I don't know anybody who had to use it after an upgrade). Don't use it to modify data!