数据复制与一致性  

Data Replication and Consistency

作　　者：林怀忠[1] 陈纯[1] 吴震华[1] 

机构地区：[1]浙江大学计算机科学与工程系,杭州310027

出　　处：《计算机工程与应用》2001年第20期107-108,171,共3页Computer Engineering and Applications

摘　　要：数据复制是分布式数据库和数据仓库中常用的方法,以提高数据的可用性和系统的性能。文中介绍了在数据库系统中广泛使用的数据复制方法,分析了其优缺点和适用的范围,重点讨论了异步复制方法中的一致性恢复、一致性偏离的度量和数据存取的限制等问题,给出了数据复制策略的评价目标。To improve data availability and system performance,Data replication methods are widely adopted in distributed databases and data warehouses.In the paper,several data replication methods that are widely used in database systems are introduced and their characteristics and suitable areas are also analyzed.The issues of consistency restore,metric of consistency divergence and data access restrict in asynchronous replication are discussed mainly.The goals of data replication are given lastly.

关 键 词：分布式数据库 数据复制 一致性 数据仓库 

分 类 号：TP311.133[自动化与计算机技术—计算机软件与理论]