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Overview of CA 2E Relations

The first step in using CA 2E is to define your basic data model. Do this by typing a number of relation statements to define the entities in your data model.

Relation statements have the form:

Object + Relation + Object

where:

Object is a CA 2E model object. Model objects are used to represent real world entities, such as COURSE, HORSE, or RACE. There are several different types of CA 2E model objects. Initially we need only consider two types: fields (items of data) and files. In general, the entities we identified will become files and the attributes we identified will become fields.

Relation is a CA 2E relation type. The CA 2E relations establish the relationships between fields and files, and files and other files.