摘要
构建了一种基于P2P系统的本地关系数据库模型LRM,给出了LRM的语义定义及体系结构,旨在解决客户机/服务器方式的分布式数据库系统存在的瓶颈节点,解决为保持节点间的数据一致性而增加的网络传输负荷问题.通过实例分析了模型中各对等节点之间通过域关系进行的数据传输,以及如何实现各节点之间的一致性规则.实例表明,采用LRM模型可以降低数据库系统中节点之间的数据通信量,使各节点能够提供更灵活的数据和服务共享,提高了系统的可靠性.
In order to overcome the bottleneck node in the distributed database system in client/server mode and to reduce the network transfer load for keeping the data consistency between nodes, a local relation model （LRM） of database based on P2P system is proposed, and the theoretic semantics and architecture of LRM are presented. Moreover, an instance is presented to analyze the data transfer according to domain relation and the way to the realization of coordination formulas between P2P nodes. It is finally concluded that the proposed LRM helps to reduce the data communication between nodes, improve the system reliability and provide flexible sharing on data and service.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第5期90-93,99,共5页
Journal of South China University of Technology(Natural Science Edition)
作者简介
喻梅（1970．），女，博士生，讲师，主要从事计算机网络与数据库方面的研究．E-mail：yumei@tju．edu．cn
