| 一种用于分布式数据库系统的并发控制新算法 |
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| 引用本文： | 毛新宇,王化文.一种用于分布式数据库系统的并发控制新算法[J].小型微型计算机系统,2003,24(8):1507-1509. |
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| 作者姓名： | 毛新宇 王化文 |
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| 作者单位： | 1. 武汉大学,东湖分校,湖北,武汉,430072;武汉大学,计算机学院,湖北,武汉,430072
2. 武汉大学,计算机学院,湖北,武汉,430072 |
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| 摘 要： | 针对分布式数据库的并发控制提出了一种新算法．本算法根据新事务与本地节点上已启动但还未完成事务的信息进行比较，动态地在一种称为EWP的乐观并发控制算法与一种称为PSL的悲观并发控制算法之中选择一种算法来实现对该新事务的并发控制。本算法是在文中提出的EWL算法的基础上修改而成的，它比原来的EWL算法具有更强的自适应性．
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| 关 键 词： | 分布式数据库系统 并发控制 乐观并发控制算法 悲观并发控制算法 |
| 文章编号： | 1000-1220(2003)08-1507-03 |
A New Concrurency Control Algorithm for Distributed Database System |
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| MAO Xin yu,WANG Hua wen.A New Concrurency Control Algorithm for Distributed Database System[J].Mini-micro Systems,2003,24(8):1507-1509. |
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| Authors: | MAO Xin yu WANG Hua wen |
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| Abstract: | This paper presents a new algorithm which is useful to concurrency control of distributed database system.The new algorithm is realized by selecting dynamically between optimistic algorithm which is named EWP and pessimistic algorithm which is named PSL,according to the result of comparing a new management with unfinished managements in local site. The new algorithm is finished by amending the EWL algorithm presented in thispaper,and it has more self adaptability than the EWL. |
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| Keywords: | distributed database system concurrency control optimistic argorithm of concurrency control pessimistic argorithm of concurrency control |
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