Granularity of Locks and Degrees of Consistency in a Shared Data Base
Granularity of Locks and Degrees of Consistency in a Shared Data Base
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发表时间：
1998-07
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通讯作者：
J. Gray;R. Lorie;G. R. Putzolu;I. Traiger
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作者：
J. Gray;R. Lorie;G. R. Putzolu;I. Traiger
讨论了选择合适的锁定对象的合适的hranularit〜（大小）的问题，并讨论了并发和开销之间的权衡。提出了一种允许通过不同交易在各种粒度上同时锁定的锁定协议。它基于引入其他锁定模式，除了常规共享模式AN5独占模式。证明了该协议与常规协议的等效性。
The problem of choosing the appropriate Hranularit~ (size) of lockable objects is introduced and the tradeoff between concurrency and overhead is discusseS. A locking protocol which allows simultaneous locking at various granularities by different transactions is presented. It is based on the introduction of additional lock modes besides the conventional share mode an5 exclusive mode. A proof is given of the equivalence of this protocol to a conventional one.