I'm going over transaction management in DBMS, specifically conflict serializability. I know that
T1_R(a), T2_R(b), T1_R(a)
would be considered an unrepeatable read. But would
T1_R(a), T2_W(a)
be considered an unrepeatable read? And if not, what kind of interference would something like
T1_R(a), T2_R(a), T2_W(a), T2_W(b), T1_R(b), T2_W(b)
be? Because it seems not to be conflict serializable, but I can't figure out what kind of interference it is, if any.