Suppose rLi$($x$)$ and wLi$($x$)$ refer to read lock and write lock on data item x$,$ respectively. Explain if the following is following $($or not following$)$ the $2-$phase locking scheme. If the schedule is not following $2$ phase locking protocol, change the schedule $($without changing the order of read and write operations$)$ such th

at the schedule follows the $2-$phase locking schemeWhat is wrong with the following locking scheme

S$1$: rL$2($z$),$ r$2($z$),$ r$1($z$),$ rL$1($z$),$ r$3($x$),$ rL$3($x$),$ r$3($y$),$ rL$3($y$),$ wL$1($x$),$ w$1($x$),$

unL$2($z$),$ unL$1($z$),$ unL$1($x$),$ unL$1($z$),$ unL$3($z$),$ unL$3($y$),$ c$1,$ c$2,$ c$3$