Tag: Generalization

Generalization, Specialization and Aggregation in ER Model

Last updated on 5th August 2022 by [email protected] | Category: DBMS

Generalization, Specialization and Aggregation, are data abstraction mechanisms in the ER model. They are useful to hide specifics of a set of objects. Generalization in ER Model This is similar to a bottom-up method. Here, generally two or more lower-level entities unite to generate a higher-level object. But they must share some features. In principle, […]