Trick for Remember Conflict Serializability in Schedule.

In this video, I will give you a trick on how to remember whether the precedence graph is Conflict Serializable or not.
A schedule is called conflict serializable if it can be transformed into a serial schedule by swapping non-conflicting operations. Conflicting operations: Two operations are said to be conflicting if all conditions were satisfied: They belong to different transactions. They operate on the same data item.