First Normal Form
Try it:
Review the Table
The
Customer table has one row for each customer. Even though many
customers may have the same last name, each customer has a unique
CustomerID.
The
Customer table stores customer data, only. There are no
fields for movies rented, date rented, or price.
This
table is in First Normal Form.
The
customer data is separate from the movie or rental data. The
customer table identifies each record in the collection with a
Primary Key.