Tables are where MySQL saves all it data (users, posts, passwords, credits, e-mail addresses, and everything else that needs to be stored) and if you have a problem with IBStore, you could back up the table and reinstall it and then put back the table and it would be right back to where it was before. If he makes his own store, he'd either have to make it capable of reading that table or manually put in the credits one by one in the table for his store.