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Chapter 3: Database Systems Exam Tests

Database Systems MCQs - Chapter 3

Concurrency Control Multiple Choice Questions (MCQ) PDF - 4

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Concurrency Control Questions & Answers PDF Download: MCQ Quiz 4

MCQ 16: In preemption technique, transactions are assigned a unique timestamp to decide whether it should wait or

A) Executed
B) Committed
C) Aborted
D) Rolled back

MCQ 17: Snapshot isolation is a scheme of

A) Multiversion concurrency-control
B) Multiversion two-phase locking
C) Multiversion timestamp ordering
D) Multiversion one-phase locking

MCQ 18: The two modes of locking a data item, are termed as 'shared' and

A) Composite
B) Compatible
C) Exclusive
D) Linear

MCQ 19: Two-phase locking does not ensure freedom from

A) Obtain locks
B) Release locks
C) New locks
D) Deadlocks

MCQ 20: A set of rules applied over a transaction that may lock and unlock each of the data items in the database, is known to be

A) Unlocking protocol
B) Locking protocol
C) Deadlock protocol
D) Validation protocol

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Concurrency Control App (Android & iOS)

Concurrency Control App (Android & iOS)

Database Management System App (Android & iOS)

Database Management System App (Android & iOS)

Computer Architecture App (Android & iOS)

Computer Architecture App (Android & iOS)

Digital Image Processing App (Android & iOS)

Digital Image Processing App (Android & iOS)