Question: Hi I need someone to solve me this question 4. Let the log contains the sequence of records: [Start_Transaction, T1] [Read_Item,T1,A] [Write_Item, T1, A, 15,50]

Hi I need someone to solve me this question

4. Let the log contains the sequence of records: [Start_Transaction, T1] [Read_Item,T1,A] [Write_Item, T1, A, 15,50] [Read_Item,T1,C] [Start_Transaction,T2] [Write_Item, T1,B,10,20] [Commit,T1] [Read_Item,T2,A] [Write_Item,T2,C,15,35] [Start_Transaction,T3] [Read_Item,T2,B] [Write_Item, T3,A,50,45] [Write_Item,T2,B,20,40] System Crash Suppose the logging-and-recovery scheme uses the immediate update recovery mechanism (UNDO/NO-REDO), Identify one such possibility for data values that might be stored on the database, by the time of system crash, from the list below: a) A=15,B=20,C=15 b) A=50,B=40,C=35 c) A=45,B=40,C=35 d) A=50,B=10,C=35

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