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Concurrency in Index Structures MCQ (Multiple Choice Questions) PDF Download
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The MCQ: A scheme that creates a new version of a data item for each transaction is defined by; "Concurrency in Index Structures" App Download (Free) with answers: Concurrency control scheme; Multiversion concurrency control scheme; Timestamp concurrency control scheme; Wound concurrency control scheme; for online degree programs. Practice Concurrency in Index Structures Quiz Questions, download Apple e-Book (Free Sample) for online college classes.
Concurrency in Index Structures MCQs: Questions and Answers PDF Download
The system must deal with the deadlocks that are not prevented by using schemes of
- Validation
- Deadlock detection
- Deadlock recovery
- Both A and B
A scheme that creates a new version of a data item for each transaction is defined by
- Concurrency control scheme
- Multiversion concurrency control scheme
- Timestamp concurrency control scheme
- Wound concurrency control scheme
A transaction that is inserting a new tuple into the database is given an
- Shared lock
- Mutual lock
- Exclusive lock
- NO lock
Concurrency control is a challenging task for transactions that have
- Application accesses
- I/O activities
- User interactions
- Application interactions
In preemption technique, transactions are assigned a unique timestamp to decide whether it should wait or
- Executed
- Committed
- Aborted
- Rolled back
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