What do you mean by foreign key?

What do you mean by foreign key?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: easy

标签: intellipaat, sql, topic-specific, sql, database

参考答案摘要

A foreign key is a table column or a set of columns in a relational database system that establishes a link between data in two tables. It is used to implement referential integrity by ensuring that t...

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