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Database Systems MCQs – Practice Test 7 (Chapter 6)

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Free Database Recovery System Quiz App Download (iOS & Android): Degree of durability in which transaction commits as soon as its commit log record is written in primary site, is known to be; MCQ with answers: two-very-safe, one-safe, two-safe, and three-safe. Study Indexing in DBMS Quiz Questions, download Google Book (Free Chapter) to improve SQL performance.

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MCQ 31: The input and output operations of any database are done in:

  1. Sector units
  2. Track units
  3. Block units
  4. Log units

MCQ 32: The degree of durability in which transaction commits as soon as its commit log record is written in primary site, is known to be:

  1. One-safe
  2. Two-very-safe
  3. Two-safe
  4. Three-safe

MCQ 33: LSN stands for:

  1. Linear sequence number
  2. Line simulator number
  3. Log sequence number
  4. Log simulator number

MCQ 34: Number of operations required for the movement of blocks between disk and main memory are:

  1. 2
  2. 3
  3. 4
  4. 5

MCQ 35: For recording database modifications, the widely used structure is called:

  1. Scheduling
  2. Buffering
  3. Log
  4. Blocking

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