What is the function of the unique constraint

By Rebecca
1 Min Read

What is the function of the unique constraint?

(a) It ensures that no two values under an attribute are identical

(b) It ensures that all the attributes are perfectly unique in their data type

(c) It ensures that all the relations in the database have a unique set of attributes

(d) It does not have any function in SQL

Answer:

(a) It ensures that no two values under an attribute are identical

What is the function of the unique constraint

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