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      Question

      A surrogate key

      is:
      A Natural identifier from the data Correct Answer Incorrect Answer
      B Composite key of multiple attributes Correct Answer Incorrect Answer
      C Artificially created identifier Correct Answer Incorrect Answer
      D Foreign key to another table Correct Answer Incorrect Answer
      E Unique constraint on data Correct Answer Incorrect Answer

      Solution

      A surrogate key is a system-generated unique identifier, often used in data warehousing.

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