| GIS is an information system that acquires, stores, analysis and displays spatial data. GIS technology is developing very fast these years, and its application area includes environment assessment, city planning, public facility management. With the inherent complexity of the GIS software, we need more efficient ways to develop large GIS systems. Software reusability is one of the most critical problems in software engineering, and is considered one of the right ways to solve the software crisis problem. Under such circumstance, software component technology is thriving these years, and there are many technologies available, including COM/DCOM, CORBA and JavaBeans/EJB. Component-based software develop(CBD) is receiving considerable attention within the last years. In order to improve the efficiency and quality in developing GIS software, we present the component-based GIS software development method. In this paper, we will describe the development model of the component-based GIS software development method. At the end of this paper, we will give an implementation of a COM-based GIS component and an example of a system building with that GIS component. |
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