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Specialization

  • Specialization is a top-down approach, and it is opposite to Generalization. In specialization, one higher level entity can be broken down into two lower level entities.
  • Specialization is used to identify the subset of an entity set that shares some distinguishing characteristics.
  • Normally, the superclass is defined first, the subclass and its related attributes are defined next, and relationship set are then added.

For example: In an Employee management system, EMPLOYEE entity can be specialized as TESTER or DEVELOPER based on what role they play in the company.


DBMS Specialization
Next TopicDBMS Aggregation




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