Question

For what reasons is 2-phase locking protocol required? Explain. Discuss the disadvantages of basic 2-phase locking protocol. List the ways and means that can be used to overcome the disadvantages.

28 May 2025
Answer :
Word Count : 251
The 2-phase locking (2PL) protocol is required to ensure serializability in a database system. Serializability is a key criterion for the correctness of concurrent transactions. In a multi-user database environment, transactions may run concurrently, which can lead to issues like lost updates, dirty reads, and inconsistent data. The 2PL protocol _____ _________ ____ ____ ______ __________.
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