Superclass (database theory)

In database design and database theory, class organization is stratified into class hierarchies which use inheritance. Class hierarchies consist of superclasses and subclasses, in which each subclass has an isa relationship with its superclass. This is similar to the concept of specialization and generalization that can be expressed in an EE-R diagram or model.  Subclasses inherit the data members and methods of their superclasses, and they may have additional data members and methods of their own.
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