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Database Recovery System MCQ – Practice Test 6 PDF Download

MCQ 26: The field of update log record that defines the unique identifier of the transaction is known as:

  1. Data-item identifier
  2. Old value identifier
  3. Transaction identifier
  4. New value identifier

MCQ 27: Transaction processing is based on a:

  1. Validation model
  2. Recovery model
  3. Storage model
  4. Network model

MCQ 28: The log is a sequence of:

  1. Log groups
  2. Log records
  3. Log files
  4. Log units

MCQ 29: A configuration that can takeover by the backup site almost instantaneous is known as:

  1. Hot-spare
  2. Time to commit
  3. One-safe
  4. Two-safe

MCQ 30: The unique identifier field in the update log record that performs the write operation is called:

  1. Data-item identifier
  2. Transaction identifier
  3. Data-value identifier
  4. New value identifier

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