本文叙述一个DCS 系统数据库的设计,说明了系统数据库的组成及其关系模式,系 统中分布式数据库的建立、分布式数据库中实时数据的刷新方法,以及内存中实时数据库的组织。 关键词: DCS 系统,分布式数据库 Abstract:The paper describes the design of DCS system databases,explains componentand relational mode of system databases, illustrations how to build the distributed databases in system,and refresh mechanism of real-time data in the distributed databases,and scheme of real-time databases in memory。 Keyword: DCS system, distributed database