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The entity integrity rule states that (a)No primary key attribute can be null (b)Referen

The entity integrity rule states that (a)No primary key attribute can be null (b)Referen

The entity integrity rule states that

(a)No primary key attribute can be null
(b)Referential integrity must be maintained across all entities
(c)Each entity must have a primary key
(d)A primary key must have only one attribute
(e)Foreign key attribute can be Null.

Johnson 27-Dec-2017

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