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Which of the constraint can be enforced one per table?

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+1 vote
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in SQL Server by (80.5k points)
Which of the constraint can be enforced one per table?

(a) Primary key constraint

(b) Not Null constraint

(c) Foreign Key constraint

(d) Check constraint

I had been asked this question in class test.

My enquiry is from Constraints topic in division Manipulating Data with Select of SQL Server

1 Answer

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Best answer
The correct option is (a) Primary key constraint

The best explanation: Each table is having only one primary key constraint and it contains only unique values.

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