2. Consider a mail order database in which employees take orders for parts from customers. The data requirements are summarized as follows: - The mail-order company has employees identified by a unique employee number, their first and last names, and a zip code where they are located. - The customers of the company are identified by a unique customer number, their first and last names, and the zip code where they are located. - The parts being sold by the company are identified by a unique part number, a part name, their price, and quantity in stock. - Orders placed by customers are taken by employees and are given a unique order number. Each order may contain one or more parts and their received date as well as a shipped date is recorded