GATE | GATE CS 1999 | Question 31

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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.

This question is part of this quiz :

Transactions and concurrency control,GATE CS 1999
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DBMS Quiz
GATE
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