文档编号产品版本密级1.0共87页数据仓库系统总体设计文档作者:______日期:2001/12/20项目经理:______日期:2001/12/28部门经理:____日期:2002/01/08总工办:______日期:2002/01/08目录1概述........................................................................................................................71.1背景...............................................................................................................71.1.1待开发的软件系统名称...................................................................................81.1.2系统的基本概念...............................................................................................81.1.3项目组名称.......................................................................................................81.1.4项目代号...........................................................................................................81.2术语和缩写词...............................................................................................81.3设计目标.......................................................................................................92系统设计................................................................................................................92.1设计原则.......................................................................................................92.2系统结构.....................................................................................................112.2.1子系统划分.....................................................................................................112.3系统数据结构.............................................................................................172.3.1逻辑结构.........................................................................................................122.3.2层次结构.........................................................................................................132.3.3网络拓扑结构.................................................................................................142.3.4网络层次结构.................................................................................................162.4行业特殊需求.............................................................................................172.5底层数据库(仓库)设计.........................................................................192.5.1设计原则.........................................................................................................192.5.2数据现状.........................................................................................................202.5.3数据存储整体规划.........................................................................................212.6ETL系统......................................................................................................242.6.1需求规定.........................................................................................................242.6.2运行环境.........................................................................................................242.6.3设计思想.........................................................................................................242.6.4结构说明.........................................................................................................252.6.5处理流...