What is the difference between check and foreign key?

Posted by GigaPr on Stack Overflow See other posts from Stack Overflow or by GigaPr
Published on 2010-04-11T17:25:56Z Indexed on 2010/04/11 17:33 UTC
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sql

Hi,

i am quite confused about the difference between a FOREIGN KEY and CHECK constraint.

they appear to me to achieve the same result.

I mean I could create a table and enforce a Foreign key on another table, but i could create

a CHECK to ensure the value in in another table.

What is the difference and when to use the one or the other?

thanks

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Developer IT

What is the difference between check and foreign key? - Developer IT

What is the difference between check and foreign key?

sql

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