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      Question

      Materialized views differ from normal views

      because:
      A They are read-only Correct Answer Incorrect Answer
      B They store actual query results physically Correct Answer Incorrect Answer
      C They require triggers Correct Answer Incorrect Answer
      D They cannot be refreshed Correct Answer Incorrect Answer
      E They do not support indexes Correct Answer Incorrect Answer

      Solution

      Materialized views cache results physically, unlike virtual views.

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