MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the function of the unique constraint? |
| A. | tIt ensures that no two values under an attribute are identical |
| B. | tIt ensures that all the attributes are perfectly unique in their data type |
| C. | tIt ensures that all the relations in the database have a unique set of attributes |
| D. | tIt does not have any function in SQL |
| Answer» B. tIt ensures that all the attributes are perfectly unique in their data type | |