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This Concept Map, created with IHMC CmapTools, has information related to: 02DeadlockPreventionProtocols, Deadlock Prevention Protocols (Specify how contention to database items are resolved without deadlock) ???? With Timestamp [compares TS of the requesting trans. and the trans. that holds the lock] (aborted transactions will restart with the previous timestamp), With Timestamp [compares TS of the requesting trans. and the trans. that holds the lock] (aborted transactions will restart with the previous timestamp) ???? Wait-Die (if requesting trans is elder to the trans that holds the lock, the requesting trans waits otherwise the requesting trans self-aborts), Deadlock Prevention Protocols (Specify how contention to database items are resolved without deadlock) ???? Without Timestamp (aborted transactions will restart after a random wait time), With Timestamp [compares TS of the requesting trans. and the trans. that holds the lock] (aborted transactions will restart with the previous timestamp) ???? Wound-Wait (if requesting trans is elder to the trans that holds the lock, the requesting trans wounds (aborts) the trans that holds the lock otherwise the requesting trans waits), Without Timestamp (aborted transactions will restart after a random wait time) ???? Cautious Waiting (a contending transaction will wait only if the current transaction of the database item is not waiting for any other database item; otherwise contending transaction self-aborts), Without Timestamp (aborted transactions will restart after a random wait time) ???? No Waiting (each transaction that notices contention self-aborts )
