Documents Concurrency Control Alexandra Cristea and Steve Russ 1.

Slide 1Concurrency Control Alexandra Cristea and Steve Russ 1 Slide 2 Who needs control? large databases are usually shared – by many users, and resources it is efficient…

Documents Distributed Transaction Recovery. 2 Goal All_or_nothing semantics of atomicity must be extended to a...

Distributed Transaction Recovery Goal All_or_nothing semantics of atomicity must be extended to a transactionâs updates on multiple servers Distributed system can fail partially…