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What is a foreign key in SQL?

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by alf.murazik , in category: Technology , 3 years ago

What is a foreign key in SQL?

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1 answer

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by rosa , 3 years ago

A foreign key is a unique key of a table can is used as a reference in another table. A column in a table can be used to identify records in another table, then It will be a foreign key.

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