Question: a) Consider the five types of transactions given in Fig. 1. If deferred update strategy is used, which needs to be redone after the crash?

a) Consider the five types of transactions given in Fig. 1. If "deferred update" strategy is used, which needs to be redone after the crash?

(b) Consider the five types of transactions given in Fig. 1. If "immediate update" strategy is used, which needs to be undone/redone after the crash?Fig. 1.

HHHOE T a n S a t i n T1 T2 T3 T4 T5 Time of checkpoint Fig. 1. Time of failure Time

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