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A study on the component classification in GIS (Geographic Information System)
Yun-Won Jo, Myung-Hee Jo, Dong-Ho Shin
Department of Urban Information Engineering, Kyungil University
33 Buho-ri, Hayang-up, Kyungsan-si, Kyungsan bukdo, 712-701, Korea
Tel : +82-53-850-7312,
Fax : +82-53-854-1272
Email :mhjo@bear.kyungil.ac.kr,
chogerry@yahoo.com, sdh1415@chollian.net
1. Introduction
Recently many software engineers have focused on component research to increase the reusability and interoperability. Especially, the research of common repository system for architecture technology, management, and development has been regarded as a big issue because it can save time and manpower by accessing to exactly what system developers are looking for.
System developers usually tend to spend much of their time and effort to find out certain functionality for the implementation of their preferred style. Also, they want to obtain guaranteed component for improving their system productivity and quality at the same time. However, as you know, it is very difficult to identify certain components in a repository because of the lack of quality software components and the inability of developers to efficiently find them. Here, in order to solve this, establishing fully repository architecture in the Web for component sharing and circulation should be encouraged in a proper way.
In order to implement GIS (Geographic Information System) more efficiently in the view of cost and time, GIS developers started to consider the concept of “Component GIS”. It is mainly focused on reusability and interoperability because most GIS projects have its certain application such as MIS(Marketing Information System), ITS(Intelligent Information System), LIS(Land Information System), DCS(Disaster Control System), and FMS(Facility Management System) and each application needs its common functionalities such as mapping and query or its certain functionality such as 3D viewer and GPS data processing. Therefore, if there exists a universal repository storing GIS components and system designers or developers know where desired component blocks are located in real time, GIS developers can easily select their desired component then modify or composite their system by using them.
In this paper, the metadata, which describe component, are the key to the functionality of the repository. Therefore, metadata, especially describe GIS components the most, should be first defined then the architecture of a component repository should be constructed.
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