陈东辉,韦梓楚.ADA—DDBMS中的并发控制.软件学报,1994,5(12):51-56 |
ADA—DDBMS中的并发控制 |
CONCURRENCY CONTROL IN ADA-DDBMS |
投稿时间:1992-06-23 修订日期:1992-09-09 |
DOI: |
中文关键词: 分布式数据库管理系统,事务管理,并发控制 |
英文关键词:DDBMS, transaction management, concurrency control. |
基金项目: |
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中文摘要: |
并发控制是DDBMS(分布式数据库管理系统)中事务管理的重要功能.本文介绍了一种基于封锁的积极方法与消极方法相结合的并发控制策略.它根据全系统实际运行的即时状态,动态地决定对事务采取的执行策略,大大减少了积极封锁所易产生的死锁情况,同时又改善了消极封锁效率低的问题. |
英文摘要: |
Optimistic and conservative locking strategies are two different mechanics of concurrency control in distributed data base management systems (DDBMS). This paper proposes a method which combines the above two strategies and awakes it possible to dynamically select the way of transaction processing according to the real recent state of the system, to reduce deadlock and to make the system itself more efficent in concurrency control while remain both features of these two strategies. |
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