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Chapter 3: Database Systems Exam Tests

Database Systems MCQs - Chapter 3

Concurrency Control Multiple Choice Questions PDF Download - 5

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Concurrency Control Questions & Answers PDF Download: MCQ Quiz 5

MCQ 21: Deadlock recovery is possible by using the scheme(s)

A) Deadlock recovery
B) Deadlock detection
C) Deadlock elimination
D) Both A and B

MCQ 22: For controlling preemption, each transaction can be assigned a unique

A) Order
B) Identifier
C) Locator
D) Timestamp

MCQ 23: A protocol that permits a transaction to lock a new data item only if it has not yet unlocked any data item, is called

A) Two-phase unlocking protocol
B) One-phase locking protocol
C) Two-phase locking protocol
D) One-phase unlocking protocol

MCQ 24: A time stamp-ordering scheme ensures

A) Serializability
B) Cascading
C) Atomicity
D) Consistency

MCQ 25: The data item may be locked by

A) 2 modes
B) 3 modes
C) 4 modes
D) 5 modes

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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 Basics App (Android & iOS)

Computer Basics App (Android & iOS)

Operating Systems App (Android & iOS)

Operating Systems App (Android & iOS)