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 a one-to-many 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.

 This computer programming-related article is a stub. You can help Wikipedia by expanding it.