Deprecated -Subject Database Management System › Relational database concepts › Question #15428
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QWhat is a foreign key in a relational database?

ID: #15428 Relational database concepts 127 views
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#15428Q ID
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Relational database conceptsTopic
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  • A A key used for sorting data in a table ✔ ✖
  • B A key used for joining two tables ✔ ✖
  • C A key that uniquely identifies a row in a table ✔ ✖
  • D A key that represents a relationship between tables ✔ ✖
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A foreign key is a column or a set of columns in a table that refers to the primary key of another table. It establishes a relationship between two tables by enforcing referential integrity and allowing data to be shared and connected between them.

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