For some S: T1: Read_lock(X), T1: R(X), T1: Write_lock(X), T1: W(X), Unlock(X), Commit
Is this allowed under BASIC 2PL?
It is my understanding that it isn't... What does "escalating" a lock mean? I can't seem to find the exact information I'm after.
Can a write_lock be acquired after a read_lock in Basic Two-phase locking
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