GATE CS 2024 Question - Wise Solutions | DBMS | 2PL (Two-Phase Locking)
Автор: Arihant Online Academy
Загружено: 2024-10-14
Просмотров: 259
Описание:
Which of the following statements about the Two-Phase Locking (2PL) protocol is/are TRUE?
2PL permits only serializable schedules
With 2PL, a transaction always locks the data item being read or written just before every operation and always releases the lock just after the operation
With 2PL, once a lock is released on any data item inside a transaction, no more locks on any data item can be obtained inside that transaction
A deadlock is possible with 2PL
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