GATE | GATE CS 1999 | Question 31 (original) (raw)

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For the schedule given below, which of the following is Correct?

1   Read A 2                               Read B 3   Write A 4                               Read A 5                               Write A 6                              Write B 7   Read B 8   Write B

This schedule is serialisable and can occur in a scheme using 2PL protocol.

This schedule is serialisable but cannot occur in a scheme using 2PL protocol.

This schedule is not serialisable but can occur in a scheme using 2PL protocol.

This schedule is not serialisable and cannot occur in a scheme using 2PL protocol.

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