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File record length

  • A.should always be fixed
  • B.Should always be variable
  • C.depends upon the size of the file
  • D.should be chosen to match the data characteristics

Answer: D

Correct answer: should be chosen to match the data characteristics

Record length is a design decision, not a rule: fixed-length records are simpler and allow a record’s position to be computed directly, while variable-length records waste no space when the data itself varies greatly in size. The right choice follows from what the data looks like.

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