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Which of the following is a procedure for acquiring the necessary locks for a transaction

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
(e)
    
Three Phase lock.

Dec 28 2017 Read more Less More

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