Which one is true statement ? – McqOptions

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1.	Which one is true statement ?
A.	Locking prevents non – serializable schedules.
B.	An exclusive lock on data item X is granted even if a shared lock is already held on X.
C.	With finer degree of granularity of locking a high degree of concurrency is possible.
D.	Locking cannot take place at field level.
Answer» D. Locking cannot take place at field level.

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