One to One
The Receipt you
designed allows one customer to rent one video at a time. It is a
one-to-one relationship. In the real world, one customer can rent
several videos at a time.
In order to create a
one-to-many relationship, you need to create a Form with a Subform.
The main form would be where
you select the customer and the date.
The subform would be the list of videos this customer rented.