Database Systems MCQs (Computer Science) From Textbook

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Database Systems Certification MCQs – Mock Test 95

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Relational Databases MCQs – Mock Test 95 PDF Download

MCQ: 471

The relational model hides low-level implementation details from

  1. Users
  2. Developers
  3. Both A and B
  4. System itself
MCQ: 472

The degree of durability in which transaction commits as soon as its written at the primary and the backup site is known to be

  1. One-safe
  2. Two-very-safe
  3. Two-safe
  4. Three-safe
MCQ: 473

For testing whether a subquery has duplicate tuples in its result, SQL includes a

  1. Comparison function
  2. Boolean Function
  3. Aggregate Function
  4. Induced function
MCQ: 474

File scans are algorithms for searching that is used to locate and retrieve records, fulfilling a

  1. Projection condition
  2. Selection condition
  3. Hashing condition
  4. Evaluation plan condition
MCQ: 475

At the logical level a record can be described as a

  1. Block
  2. Type definition
  3. Segments
  4. Sequences

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