Concurrency
n
Merging transactions is simple but
may
decrease the
program concurrency.
n
n
Start_Transaction;
n
..
n
Start_Transaction
;
n
Access S;
n
End_Transaction;
n
..
n
..
n
..
n
End_Transaction;
n
Start_Transaction;
n
Access S;
n
End_Transaction;
n
Conflict!