Workstudy View Equivalent from the Class Hierarchy

With the Workstudy Class, we continue checking the class hierarchy against the original relational views. The relational Workstudy View required the joining of data from both the Employee and the Student base tables. In this object schema, as it has been constructed, this joining is not necessary. The same data shown in the relational Workstudy View can be obtained by simply querying the Workstudy Class as shown below. This is because the Workstudy Class inherits from both the Student and Employee Classes in addition to the Person Class. A join operation is not needed.

Workstudy View equivalent from the class hierarchy

Next: Employee View equivalent from the class hierarchy. Also see the related content below.

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