介绍了厂级监控信息系统（SIS）及其数据库平台PI实时数据库、PI数据库中的数据流程以及PI数据库的建点技术。

The supervisory information system(SIS) and its database platform PI(plant information)real-time database, data flow and point building technology in PI database are introduced.

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计算机在火电厂中的应用范围越来越广，导致了实时数据库的产生和应用，也由此产生了厂级监控信息系统(SIS)的概念。

The increasingly wide use of computer in power plants results in the generation and application of real-time database and the concept of SIS as well.

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