Generalization Specialization and Aggregation in DBMS

Generalization Specialization and Aggregation in DBMS are abstraction mechanisms used to model information.

Generalization in DBMS –

Generalization is a abstracting process of viewing sets of objects as a single general class by concentrating on the general characteristics of the constituent sets while suppressing or ignoring their differences.

Specialization in DBMS –

Specialization may be seen as the reverse process of Generalization. Specialization is the abstracting process of introducing new characteristics to an existing class of objects to create one or more new classes of objects.

Aggregation in DBMS –

Aggregation is the process of compiling information on an object, thereby abstracting a higher level object.

for detailed information download PDF

downloading servers are below

server 1  [media fire]