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Consider the following schedule for transactions T1,T2 and T3:

Which one of the schedules below is/are not the correct serialization of the above transactions?
  • a)
    T→ T3 → T2
  • b)
    T3 → T1 → T2
  • c)
    T2 → T1 → T3
  • d)
    T3 → T2 → T1
Correct answer is option 'A,B,D'. Can you explain this answer?
Most Upvoted Answer
Consider the following schedule for transactions T1,T2 and T3:Which on...
According to the question,
The precedence graph for the given schedule is:
It can be derived that:
Read (X) in T3 is followed by Write (X) in T1.
Read (Y) in T1 is followed by Write (Y) in T2.
Write (X) in T3 is followed by Read (X) in T2.
The only correct sequence will be T→ T→ T2.
Therefore, T→ T3 → T2, T3 → T1 → T2 and T3 → T2 → T1 are not the correct serialization of the given transactions.
Hence, the correct options are (A), (B) and (D).
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Consider the following schedule for transactions T1,T2 and T3:Which one of the schedules below is/are not the correct serialization of the above transactions?a)T1→T3→T2b)T3 → T1 → T2c)T2 → T1 → T3d)T3 → T2 → T1Correct answer is option 'A,B,D'. Can you explain this answer?
Question Description
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