A entity type does not need an identifier.

Question

Computers & Technology

Fisher Franco

2 January, 20:40

A entity type does not need an identifier.

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Answers (1)

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Tamara Thompson · Answer 1

Entity type requires at least one identifier.

Explanation:

An entity is an instance of a class. There are many types of entity. An identifier consist of attributes and relationships which is used to uniquely identify an entity. So while making the E-R model it is required for an entity to be unique. A weak entity requires an entity. However a strong entity is itself its identifier.