What is the unique key in sql?

by athena.rath , in category: Technology , 3 months ago

What is the unique key in sql?

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1 answer

by alf.murazik , 3 months ago

The unique key is a column of a table that is used to identify a column. It defines a column uniquely. No two rows can have the same unique key. It is used as a constraint to make records unique.