Database Systems MCQs (Computer Science) From Textbook

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Database Systems MCQs – Mock Test 17

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Database Languages Quiz – Mock Test 17 PDF Download

MCQ: 81

Domain constraints and referential-integrity constraints are special forms of

  1. Assertions
  2. Authorization
  3. Integrity
  4. Consistency
MCQ: 82

All the usual SQL statements, operate in the context of schema, including the

  1. DDL statements
  2. DML statements
  3. Both A and B
  4. Data definition statements
MCQ: 83

In the case of power outage or other system crash, when the system restarts, the action known to be occur is of

  1. Rollback work
  2. Trace work
  3. Traceback work
  4. Commit work
MCQ: 84

Domain constraints are the most elementary form of

  1. Manipulation Constraints
  2. Consistency Constraints
  3. Definition Constraints
  4. Integrity Constraints
MCQ: 85

SQL uses the special keyword in a predicate to test for a null value

  1. Escape
  2. Unknown
  3. Known
  4. Null

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