For each of the following schedules, state whether the schedule is serializable, conflict- serializable, view-serializable, recoverable, and whether it avoids cascading aborts:

(a) read(T1, balx), read(T2, balx), write(T1, balx), write(T2, balx), commit(T1),
commit(T2)
(b) read(T1, balx), read(T2, baly), write(T3, balx), read(T2, balx), read(T1, baly),
commit(T1), commit(T2)
(c) read(T1, balx), write(T2, balx), write(T1, balx), abort(T2), commit(T1)
(d) write(T1, balx), read(T2, balx), write(T1, balx), commit(T2), abort(T1)
(e) read(T1, balx), write(T2, balx), write(T1, balx), read(T3, balx), commit(T1),
commit(T2), commit(T3)

(a) read(T1, balx), read(T2, balx), write(T1, balx), write(T2, balx), commit(T1),
commit(T2)
Not (conflict) serializable; not view serializable. Recoverable; avoids cascading abort.
(b) read(T1, balx), read(T2, baly), write(T3, balx), read(T2, balx), read(T1, baly),
commit(T1), commit(T2)
Conflict serializable and so view serializable. Recoverable; (however, does not avoid
cascading abort if T 3 had aborted, T 2 would also have to abort as it has read the value of an
aborted transaction).
(c) read(T1, balx), write(T2, balx), write(T1, balx), abort(T2), commit(T1)
Assuming abort occurs, then only transaction T 1 occurs making schedule serial and thus
conflict serializable and view serializable. Without abort, then not (conflict) serializable; not
view serializable. Recoverable; avoids cascading abort.
(d) write(T1, balx), read(T2, balx), write(T1, balx), commit(T2), abort(T1)
Assuming abort occurs, then only transaction T 2 occurs making schedule serial and thus
conflict serializable and view serializable. Without abort, then not (conflict) serializable; not
view serializable. Not recoverable therefore not avoiding cascading abort.
(e) read(T1, balx), write(T2, balx), write(T1, balx), read(T3, balx), commit(T1),
commit(T2), commit(T3)
Not (conflict) serializable; not view serializable. Recoverable but not avoiding cascading
aborts.