The MGL protocol states that a transaction T can unlock a node N, only if none of

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The MGL protocol states that a transaction T can unlock a node N, only if none of the children of node N are still locked by transaction T. Show that without this condition, the MGL protocol would be incorrect.

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Fundamentals Of Database Systems

ISBN: 9780133970777

7th Edition

Authors: Ramez Elmasri, Shamkant Navathe

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