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Nt1310 Unit 9 Essay

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1. The last checkpoint is identified in the transaction log, which is the last time the transaction data was physically saved to disk. 2. Nothing needs to be done when a transacton commits before the last checkpoint because the data is already saved. 3. A redo algorithm is performed for a transaction that commits after the last checkpoint from the log 4. Nothing needs to be done for any transaction that has a ROLLBACK operation after the last checkpoint before the failure occurred, because the database was never updated

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