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6.830 Lecture 14 6.830 Lecture 14

6.830 Lecture 14 - PowerPoint Presentation

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Uploaded On 2016-05-25

6.830 Lecture 14 - PPT Presentation

Twophase Locking Recap Optimistic Concurrency Control 10282015 Basic Two Phase Locking Protocol Before every read acquire a shared lock Before every write acquire an exclusive lock or upgrade a shared to an ID: 333616

write read phase slock read write slock phase release object completes xlock lock set validate intersect starts locks shared

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