题目
题目
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In a relational database management system, what is a foreign key?

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The question asks: In a relational database management system, what is a foreign key? First, I note that the provided answer text is: 'b. A field in one table that is the primary key in another table.' However, the list of answer options is not present in the data you supplied, so I cannot compare this option against others. Conceptual explanation: a foreign key is a c......Login to view full explanation

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