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      Question

      In a relational database, a foreign key is used

      to:
      A Ensure data integrity Correct Answer Incorrect Answer
      B Create a link between tables Correct Answer Incorrect Answer
      C Establish a primary key Correct Answer Incorrect Answer
      D Perform complex queries Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      A foreign key is used to create a link between two tables by referencing the primary key of another table, establishing a relationship.

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