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Which of the following is an attribute that can uniquely identify a row in a table?

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Which of the following is an attribute that can uniquely identify a row in a table? (a) Secondary key (b) Candidate key (c) Foreign key (d) Alternate key I had been asked this question in an online quiz. This intriguing question comes from Query Processing in portion Query Processing Techniques of Database Management Select the correct answer from above options Interview Questions and Answers, Database Interview Questions and Answers for Freshers and Experience

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The correct option is (b) Candidate key Explanation: A Candidate Key can be any column or a combination of columns that can qualify as unique key in database.

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