Q5

A schedule of three database transactions $T_{1}, T_{2}$, and $T_{3}$ is shown. $R_{i}(A)$ and $W_{i}(A)$ denote read and write of data item $A$ by transaction $T_{i}, i=1,2,3$. The transaction $T_{1}$ aborts at the end. Which other transaction(s) will be required to be rolled back?

$$R_{1}(X) W_{1}(Y) R_{2}(X) R_{2}(Y) R_{3}(Y) \operatorname{ABORT}\left(T_{1}\right)$$