3) Explain deadlock avoidance and starvation. Draw a wait-for-graph for detecting a cycle in the given transactions T1,T2 and T3 considering (Read-Write) or (Write-Read) conflicting parameters. T1 T2 T3 Read lock(P); Read Item(P); Read lock(Q); Read Item(Q); Write lock(P); Write Item(P); Write_item(Q); Unlock(O); Write item(R); Unlock(R); Write_item(R); Unlock(R); Time

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