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Consider the following schedules involving two transactions. Which one of the following statements is TRUE?

  • $S_1 :r_1(X); r_1(Y); r_2(X); r_2(Y); w_2(Y); w_1(X)$
  • $S_2 :r_1(X); r_2(X); r_2(Y); w_2(Y); r_1(Y); w_1(X)$
  1. Both $S_1$ and $S_2$ are conflict serializable.

  2. $S_1$ is conflict serializable and $S_2$ is not conflict serializable.

  3. $S_1$ is not conflict serializable and $S_2$ is conflict serializable.

  4. Both $S_1$ and $S_2$ are not conflict serializable.

5 Answers

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OPTION IS B IS APPROPIATE ONE
Answer:

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