Database Reference
In-Depth Information
F IGURE 9.6
The beginning of the physical model for Mountain View Music's
inventory
Orders Submodel
The Orders submodel contains the most complicated set of entities in the
entire model. That's fitting, because the database is centered on customer
orders via the Mountain View Music Web site. We have a few decisions to
make when building the physical model for these entities. First, let's look
at the entities we are dealing with; they are shown next and in Figure 9.7.
Customers
Employees
 
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