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      Question

      Which of the following statements about a dense index is

      correct?
      A It contains an index entry for every search key value in the data file Correct Answer Incorrect Answer
      B It contains index entries for only some of the records in the data file Correct Answer Incorrect Answer
      C It cannot be used for fast data retrieval Correct Answer Incorrect Answer
      D It stores only the first record of each block Correct Answer Incorrect Answer
      E It requires less storage than a sparse index Correct Answer Incorrect Answer

      Solution

      It contains an index entry for every search key value in the data file.

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