Database Systems MCQs - Chapter 21

SQL Concepts and Queries Multiple Choice Questions (MCQ) PDF - 4

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SQL Concepts and Queries Questions & Answers PDF Download: MCQ Quiz 4

MCQ 16: SQL does not define a standard way of specifying that a view is

A) Materialized

B) Not materialized

C) Stored

D) Not stored

MCQ 17: The rollback work cannot undo, once a transaction has executed by the

A) Commit work

B) Traceback work

C) Trace work

D) Transmit work

MCQ 18: If there is a chain of foreign-key dependencies across multiple relations, a deletion or update at one end of the chain may propagate

A) No dependent

B) Entire chain

C) 1 dependent only

D) Few dependents only

MCQ 19: If any of the foreign-key columns is null, the tuple is defined automatically to satisfy the

A) Integrity

B) Atomicity

C) Isolation

D) Constraint

MCQ 20: How to turn off automatic commit depends on the specific

A) Database system

B) Queries execution

C) SQL implementation

D) Structure design

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