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Database Systems MCQs (Computer Science) From Textbook

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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