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      Question

      What is a foreign key in a relational

      database?
      A A column that uniquely identifies each row in a table Correct Answer Incorrect Answer
      B A column that is used for sorting data in a table Correct Answer Incorrect Answer
      C A column that references a primary key in another table Correct Answer Incorrect Answer
      D A column that is used for indexing data in a table Correct Answer Incorrect Answer

      Solution

      The correct answer is C

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