MySQL › Data Constraints and Integrity - MySQL › Question #15504
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QWhich type of data constraint in MySQL ensures that each value in a column must be unique?

ID: #15504 Data Constraints and Integrity - MySQL 90 views
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#15504Q ID
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Data Constraints and Integrity - MySQLTopic
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  • A PRIMARY KEY ✔ ✖
  • B UNIQUE ✔ ✖
  • C FOREIGN KEY ✔ ✖
  • D CHECK ✔ ✖
Correct Answer: Option B

Explanation

The UNIQUE constraint in MySQL ensures that each value in a column must be unique. It prevents the insertion of duplicate values into the specified column.

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