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Question 1 2 In a relational database, what is a foreign key? a ) A key that uniquely identifies a record within its table b

Question 12
In a relational database, what is a foreign key?
a) A key that uniquely identifies a record within its table
b) A key that is used to speed up searches
c) A key used to link two tables together
d) A key that can accept null values

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