Quizzes for review
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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Related words
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。
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