What is the 2PC protocol, and what is it used for?
Answer
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A two-phase commit is a standardized protocol that ensures thata database commit is implementing in the situation where a commitoperation must be broken into two separate parts.
In database management, saving data changes is known as a commitand undoing changes is known as a rollback. Both can be achievedeasily using transaction logging when a single server is involved,but when the data is spread across geographically-diverse serversin distributed computing (i.e., each
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