数据复制在水利领域中的应用

在简要说明数据复制技术定义与特点的基础上，针对国家水利行业管理部门地理上的分布造成各个管辖区域的水利数据呈现出分散的现状，利用Oracle10g高级复制服务器，为水利资源数据分中心数据库数据维护管理系统设计了一种新的复制模型，该模型将多宿主复制模式与快照复制模式进行了有机的结合。实验结果表明，新的混合复制模型避免了传统数据复制单一模式的低效性，实现了将各个部门与总部之间以及各个部门之间的数据库联系起来，变成物理上分散、逻辑上统一的集成数据库。

Abstract:

 Based on the brief introduction of the definition and characteristics of data replication technique， directed at the current status that the geometrically distribution of state water industry management departments results in decentralized water conservancy data， utilizing advanced replication server of Oracle 10g， a new replication model for data maintenance and management system of the branch center?蒺s database for water resources data is developed， in which multi-master replication and snapshot replication are combined organically. The results show that this new hybrid model avoids the inefficiency caused by the traditional replication model， through which databases between each department and headquarter and among them are connected to become a physically-dispersed， logically-unified integrated database.