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Granularity of Locks and Degrees of Consistency in a Shared Data Base

J.N. Gray, R.A. Lorie, G.R. Putzolu, I.L. Traiger

Summary by: Steve Gribble and Armando Fox

One-line summary: Greater lock granularity gives you finer sharing and concurrency but higher overhead; four separate degrees of consistency which give increasingly greater protection from inconsistencies are presented, requiring increasingly greater lock granularity.


Absolutely great stuff. Formality, rigour, proofs, practical applications, and a revolution of database technology.


Overview/Main Points

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