基于Xpath的XML数据库并发控制及死锁检测  

Research on Concurrency Control Mechanism for XML Database based on XPath and detecting for dead lock

作　　者：赵改连[1] 曾晓云[1] 

机构地区：[1]扬州职业大学信息工程学院,225009

出　　处：《中国科技信息》2010年第23期104-106,共3页China Science and Technology Information

摘　　要：并发控制是改善数据库系统性能的最重要的机制,在XML数据管理中并发控制已经成为一个重要的研究课题。本文给出了一种基于XPath路径查询语言的XML数据库并发控制机制,主要包括:定义了XPLock锁协议模型以及锁协议规则,讨论了并发控制操作流程,给出了死锁的检测与处理方案和事务撤销与中止的处理方法。The research of XML transaction processing today are far from perfect.While some researchers have proposed some concurrency control protocols.The concurrency transaction of multi-users＇ accessing XML databases and how to advance its efficiency has become an important research subject.In this paper,we propose a concurrency control mechanism of XML database,which based on XPath language.XPLock protocol and rules are defined.We discuss the flow of concurrency control and algorithms of applying lock and releasing lock and the detecting and proposing ways for dead lock are given,besides,we present the ways of rollback or abort of a transaction.

关 键 词：XML 事务 并发控制机制 XPLock锁协议 死锁 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]