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    Question

    Bitmap indexes are most efficient

    when:
    A Column has high cardinality Correct Answer Incorrect Answer
    B Column has low cardinality Correct Answer Incorrect Answer
    C Table is very small Correct Answer Incorrect Answer
    D Queries involve full scans only Correct Answer Incorrect Answer
    E Only OLTP workloads exist Correct Answer Incorrect Answer

    Solution

    Bitmap indexes are space-efficient for columns with few distinct values (e.g., gender).

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