Database Languages Quiz Questions and Answers PDF - 17

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