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Free CompTIA ITF+ FC0-U61 Practice Question

In a relational database, two tables, 'Orders' and 'Customers', are related to each other. The 'Customers' table has a 'CustomerID' which uniquely identifies each customer. When this 'CustomerID' is used in the 'Orders' table to link each order to the specific customer that placed it, which kind of key does the 'CustomerID' represent in the 'Orders' table?

  • Primary key

  • Foreign key

  • Index

  • Unique key

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Database Fundamentals
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