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Database Recovery – Heisenbugs, Houdini’s Tricks, and the Paranoia of Science

•. What and Why?. •. Correct and Efficient Redo. •. Correct Undo. •. Quantitative Guarantees. •. Where and How?. Database Recovery – Heisenbugs, Houdini’s Tricks, and the Paranoia of Science. (Rationale, State of the Art, and Research Directions). Gerhard Weikum weikum@cs.uni-sb.de

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Assignment 4 - Solution Problem 1

Assignment 4 - Solution Problem 1 a. The records that need to be written are those that are required to abort T0, T3, and T4 : 37 T4 CLR P2/r2 36 38 T4 End Abort 39 T3 CLR P0/r3 35 40 T3 CLR P2/r6 39 41 T3 End Abort 42 T0 CLR P0/r0 31 43 T0 CLR P3/r5 42

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153 views • 5 slides

Assignment 4 - Solution Problem 1

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179 views • 5 slides

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