Computer Science, asked by rajreetu311, 6 months ago

what is foreign key? explain it's use.​

Answers

Answered by bhoomi5542
3

Answer:

A FOREIGN KEY is a key used to link two tables together. A FOREIGN KEY is a field (or collection of fields) in one table that refers to the PRIMARY KEY in another table. ... The FOREIGN KEY constraint is used to prevent actions that would destroy links between tables.

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