DBMS - Weak Entity Types DBMS - Generalization, Aggregation DBMS - Drawing an ER Diagram DBMS - Enhanced ER Model Subclass, Superclass and Inheritance in EER Specialization and Generalization in Extended ER Mode
It is the reverse process of Specialization. For example, Whales, Sharks, and Dolphins can be generalized as Fish. Similarly, Bicycle, Bike, and Car can be generalized as Vehicles. Example: Suppose we have two entity types, Employee and Customer. ...
Generalization Without Reorganization in a Simple Object Oriented DBMSIn this paper we present a simple object oriented data model, GENERAL, where the facilities of specifications of a database are extended so that in the same data model the two types ofions can coexist: specialization and ...
Specializationis a designing procedure that proceeds in atop-down manner. Specialization is just opposite to Generalization. In specialization, we split an entity to form multiple lower level entities. These newly formed lower level entities inherit some features of the higher level entities. It may ...