what do you understand by the generalization in DBMS?

What is generalization in Database management system technology?

About the Generalization basic points

The generalization is term in a database model works in lower level entities sets.

It gives the similarities of the lower level entities sets and among their sets.

It hides or do not shows the differences of the lower level entity sets.

It allows or gives permission to represents the economy system.

It emphasize the shared attributes are not repeated in the lower level entity sets.

Sometime lower level entity produces higher level entity sets in terms of taking union of several in the generalization in DBMS.

Typical model of the Generalization in the school based model

In the generalization model of school, the school is the entity but in a higher level entity which is called super class.

Student is the main object of the school which is a common entity.

The triangle component is a generalization component or tool to represent the similarities of the higher and lower level entity sets where in the model the “Class of 12th” is represent the generalization of the class categories with the similarities which is “student”. Section “A” and Section “B” are the lower level entity sets and the students are also divided in the two sections of the same class.

You can see the possibilities of the class and their section such as same subjects of the both sections.

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