10 Questions
On a successful validation, transactions are restarted.
False
The granularity of data items has no effect on concurrency control performance.
False
Coarse granularity leads to high concurrency.
False
A disk block is an example of fine granularity.
False
Intention-shared locks are used to indicate that an exclusive lock will be requested on some descendent nodes.
False
Multiple granularity locking is used to manage a flat hierarchy of granularity.
False
A shared-intention-exclusive lock is used to indicate that the current node is locked in exclusive mode but a shared lock(s) will be requested on some descendent nodes(s).
False
Intention-exclusive locks are used to indicate that a shared lock(s) will be requested on some descendent nodes(s).
False
The entire database is an example of fine granularity.
False
Multiple granularity locking is used to manage a hierarchy of granularity from fine (record) to coarse (database).
False
This quiz covers the fundamentals of concurrency control in database systems, including its purpose, importance, and techniques such as two-phase locking. Test your knowledge of transaction management and conflict resolution.
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