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Reference Entity

To help you better understand the concepts in this chapter, it helps to refer to a simple entity that includes characteristics that illustrate those concepts. This section describes that entity.

The entity is a simplified version of the Listing entity in the Real Estate model. (This example model is included with WebObjects 5.2. It is installed in /Developer/Examples/JavaWebObjects/Frameworks/JavaRealEstate.) It includes three attributes and one relationship:

• a primary key called listingID

• an attribute called bedrooms, which stores the number of bedrooms

• an attribute called bathrooms, which stores the number of bathrooms

• a relationship called address to a ListingAddress entity

This entity appears in EOModeler as shown in “Figure 3-1.”

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