The Shipping subsystem contains those classes that deal with the work of packing and shipping orders to customers.
The class diagram for this subsystem is shown in Figure B.7.
A Shipment is prepared to send a customer's product selections to the customer.
See Figure B.8.
Figure B.8. Shipment Statechart
A unique ID assigned by the bookstore to the shipment.
The shipping company who delivers the shipment. ...