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CS 540 Database Management Systems

CS 540 Database Management Systems. Logging and Recovery: ARIES. The ACID Properties of Transactions. Atomicity: Either all actions are done, or none Consistency: DB satisfies all the consistency constraints Transactions are expected to preserve consistency Is olation :

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Logging and Recovery

Logging and Recovery. If you are going to be in the logging business, one of the things that you have to do is to learn about heavy equipment. Robert VanNatta, Logging History of Columbia County. Review: The ACID properties. A tomicity: All actions in the Xact happen, or none happen.

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491 views • 26 slides

Crash Recovery

Crash Recovery. Chapter 18. Review: The ACID properties. A tomicity: All actions in the Xact happen, or none happen. C onsistency: If each Xact is consistent, and the DB starts consistent, it ends up consistent. I solation: Execution of one Xact is isolated from that of other Xacts.

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345 views • 26 slides

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Undo t1 lsn - PowerPoint PPT Presentation

CS 540 Database Management Systems

Logging and Recovery

Crash Recovery