What is Identity Column?
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Work as primary key
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Uniquely identify the records
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show a relation between the primary key and unique key
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All of the above
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None of these
Reveal answer
Fill a bubble to check yourself
E
Correct answer
Explanation
Identity columns are auto-incrementing columns that automatically generate unique numeric values for new rows. While they often serve as primary keys, that's not their definition - they're specifically about auto-generated sequential values. Options A, B, and C describe possible USES or characteristics, not the definition. The question asks 'what IS', not 'what does it DO', making 'None of these' the technically correct answer as none define what an identity column fundamentally is.