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Which of the following is not a Key in SQL Server?

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Which of the following is not a Key in SQL Server?

(a) Primary

(b) Foreign

(c) Alternate

(d) Secondary

This question was addressed to me in a job interview.

My question is taken from Foreign, Candidate, Primary, Composite, Unique Keys topic in section Planning Oracle Applications of Oracle

1 Answer

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Best answer
Right option is (d) Secondary

The best I can explain: Except Secondary all are the types of key in SQL server.

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