Computers and Technology, 31.07.2019 01:10 paytonhuff8580

Consider the following statements.
a. an entity integrity constraint states that no primary keyvalue can be null.
b. a referential integrity constraint is specified between tworelations.
c. a foreign key cannot be used to refer to its ownrelation.
identify which of the above statements is/are correct.
? only a
? only b
? only b and c
? only a and b

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Consider the following statements.
a. an entity integrity constraint states that no primary ke...

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