I understand that you would not want customers entering data in the tables and you would use forms for that.  However since I would be the creator, I would work from the tables to enter or change data, correct?  Similar to updating a spreadsheet?

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Reply from Richard Rost:

It's good practice to avoid working directly with tables as much as possible. Even I prefer to make myself an ADMIN FORM to work with. Editing directly in tables tends to cause problems later on when your database gets more complex and you've got relationships set up, and rules programmed into your forms. Sure, you CAN use the tables if you want, but I don't recommend it.