Last Updated
：2025/11/22
foreign key
Noun
Japanese Meaning
リレーショナルデータベースにおいて、あるテーブルの列または列のグループが他のテーブルを識別し、2つのテーブル間の関連性を確立するために用いられるキー（外部キー）として機能するもの。
（ plural ）
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(databases) A column (or group of columns) in a relational table that identifies another table, so that items in the two tables can be conceptually linked.
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foreign key
The foreign key in the orders table ensures each order references a valid customer in the customers table.
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The foreign key in the orders table ensures each order references a valid customer in the customers table.
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