⦁ what are the main reasons for introducing the concepts of superclasses and subclasses into an er model?(

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asked Oct 8, 2018 120k views

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Abiratsis · Answer 1 · 2018-10-12T21:48:04+0000

It avoids describing similar concepts more than once, thereby saving you time and making the ER model more readable. It also adds more semantic information to the design in a form that is familiar to many people.

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⦁ what are the main reasons for introducing the concepts of superclasses and subclasses into an er model?(

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