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What is an entity supertype and subtype, and why is it used?
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written 2.0 years ago by
DevarenjiniP
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Super types and Subtypes
- An entity can be divided into serval subgroups or subtypes
- An entity type that can be divided into subtypes is called super type.
- A subtype is a subset ofasuper type that shares common attributes.
- Subtypes behave in exactly the same way as any other entity type. …
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