Q:

A VACUUM operation is used:

YasminRadwan26
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2022-06-03
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A VACUUM operation is used:

  1. To recover or reuse disk space occupied by updated or deleted rows
  2. To protect against loss of very old data due to transaction ID wraparound.
  3. To update data statistics used by the PostgreSQL query planner
  4. All of these
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YasminRadwan26
2022-06-03
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Correct Answer:

D.All of these

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