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Which is the best file organization when data is frequently added or deleted from a file?

  • A.Sequential
  • B.Direct
  • C.Index sequential
  • D.None of the above

Answer: B

Correct answer: Direct

With direct, or hashed, organisation a record's position is computed from its key, so an insertion or deletion touches only that position. A sequential file must be rewritten to keep its order, and an index-sequential file must maintain its index as well.

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