1.

Suppose three are 3 transactions T22, T23, T24 with timestamps 10, 20, 30. Now T23 occupies a data item that is required by T22 and T24. Among the four possibilities what will be true in wait–die schema?

A. If T22 request the data item, T22 will wait
B. If T24 request the data item, T24 will wait
C. If T22 request the data item, T23 will wait
D. If T24 request the data item, T23 will wait
Answer» B. If T24 request the data item, T24 will wait


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