Consider the schedule S1 consists of three transactions T1, T2, T3 as the following: T1 R(B)...
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Consider the schedule S1 consists of three transactions T1, T2, T3 as the following: T1 R(B) R(D) Commit S1 T2 R(B) W(B) R(D) commit T3 R(A) R(C) commit Answer the following question: a) Is the schedule S1 cascadeless and recoverable? Justify your answer. b) Draw the precedence graph of schedule S1 c) Is S1 conflict-serializable? Explain briefly. If S1 is conflict-serializable, write down all equivalent serial schedules. Consider the schedule S1 consists of three transactions T1, T2, T3 as the following: T1 R(B) R(D) Commit S1 T2 R(B) W(B) R(D) commit T3 R(A) R(C) commit Answer the following question: a) Is the schedule S1 cascadeless and recoverable? Justify your answer. b) Draw the precedence graph of schedule S1 c) Is S1 conflict-serializable? Explain briefly. If S1 is conflict-serializable, write down all equivalent serial schedules.
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SOLUTION a The schedule S1 is not cascadeless because transaction T1 read... View the full answer
Related Book For
Fundamentals Of Database Systems
ISBN: 9780133970777
7th Edition
Authors: Ramez Elmasri, Shamkant Navathe
Posted Date:
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