How protocol ensures serializability and deadlock freedom

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Reference no: EM1358152

Q1) Consider the following graph based locking protocol, which allow only exclusive lock modes and which operate on datagraph that are in the form of a rooted directed acyclic graph.

- A transaction can lock any vertex point.
- To lock any other vertex, the transaction must have visited all the parents of that vertex and must be having a lock on one of the parents of the vertex. Show that the protocol ensures serializability and deadlock freedom.

Reference no: EM1358152

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