Which_of_the_following_is_a_procedure_for_acquiring_the_necessary_lock – McqOptions

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1.	Which_of_the_following_is_a_procedure_for_acquiring_the_necessary_locks_for_a_transaction_where_all_necessary_locks_are_acquired_before_any_are_released?$
A.	Record controller
B.	Exclusive lock
C.	Authorization rule
D.	Two phase lock
Answer» E.

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