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可变时标并发控制
引用本文:吴辉,刘键. 可变时标并发控制[J]. 华中科技大学学报(自然科学版), 1993, 0(4)
作者姓名:吴辉  刘键
作者单位:华中理工大学数控中心(吴辉),华中理工大学计算机科学与工程系(刘键)
摘    要:
提出了一种新的利用时标进行数据库并发控制的方法,与以前的时标法不同的是,事务的时标在其执行过程中是可变的,一个事务仅当要产生不一致性时才被撤消.该方法比以前的时标法有更大的并发性.

关 键 词:数据库系统  时标  事务  冲突可顺序化

Variable Timestamp-Based Concurrency Control
Wu Hui Liu Jian. Variable Timestamp-Based Concurrency Control[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1993, 0(4)
Authors:Wu Hui Liu Jian
Affiliation:Wu Hui Liu Jian
Abstract:
The concurrency control of the database is discussed and a concurrency control algorithm based on timestamp is proposed. It is different from existing concurrency control algorithms with static timestamp in that in this one the change of timestamp for a transaction is needed to avoid unnecessary abortion of transactions. For this algorithm, a transaction is aborted only when its operation on some object leads to inconsistency. The algorithm gives better concurrency than that by existing ones.
Keywords:database system  timestamp  transaction  conflict serializability
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