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Executable UML: A Foundation for Model-Driven Architecture by Marc J. Balcer, Stephen J. Mellor

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B.2. Subsystem Ordering

The Ordering subsystem contains those classes and relationships that deal with the process of ordering merchandise from the bookstore.

The class diagram for this subsystem is shown in Figure B.2.

Figure B.2. Ordering Subsystem Class Diagram

Customer

A customer is an individual or organization that has placed orders for books and other products offered by the store.

A customer must have purchased books; a user who simply browses to the site is not considered a customer until he or she places an order.

Customers remain active for six months after their last order. An active customer receives periodic e-mail reminders of sales ...

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