Lecture on Specialization
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This lecture explains the concept of Specialization as an enhanced feature ER model.
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2Comments
Wibi @wibisuhendra 4 Jun 2018 01:55 pm
how to relate the cust and emp entity to the person entity?
Sourav Pal @souravpal 12 Jun 2018 01:49 pm
cust and emp are two deferent specializations of person entity.