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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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