The paper is mainly about the design and development of the platform , and something about com , comgis , the theory of component software development , also the design and implement of data access component . the dual - interface data access component based on ole db and data model supporting ogc are the two prominent characteristics of the paper 本文以组件式地理信息系统的设计和开发为核心,分别阐述了组件、组件gis和组件式软件开发的理论和方法,对现有组件gis产品进行了研究分析,重点介绍了powercommap的设计和数据访问组件的开发。