MySQL › Data Constraints and Integrity - MySQL › Question #15511
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QWhich type of data constraint in MySQL ensures that a column's value references a valid primary key value in another table?

ID: #15511 Data Constraints and Integrity - MySQL 122 views
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#15511Q ID
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Data Constraints and Integrity - MySQLTopic
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  • A PRIMARY KEY ✔ ✖
  • B UNIQUE ✔ ✖
  • C FOREIGN KEY ✔ ✖
  • D INDEX ✔ ✖
Correct Answer: Option C

Explanation

The FOREIGN KEY constraint in MySQL ensures that a column's value references a valid primary key value in another table. It establishes a relationship between two tables based on their key values.

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