Deprecated -Subject Database Management System › Data Constraints and Integrity - MySQL › Question #15505
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QWhich type of data constraint in MySQL uniquely identifies each row in a table?

ID: #15505 Data Constraints and Integrity - MySQL 142 views
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#15505Q ID
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Data Constraints and Integrity - MySQLTopic
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  • A PRIMARY KEY ✔ ✖
  • B UNIQUE ✔ ✖
  • C FOREIGN KEY ✔ ✖
  • D INDEX ✔ ✖
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The PRIMARY KEY constraint in MySQL uniquely identifies each row in a table. It ensures that each value in the specified column or set of columns is unique and not NULL.

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