利用EJB构件技术开发了具有地图显示和图层操作功能的原型系统。

Use EJB component to implement an archetype system, which can provide the function of displaying maps and operating map layers.

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本系统由图层操作、图形编辑、数据库浏览、数据库结构操作、信息查询等功能组成。

Map layer, graphics edit, database view, database structure operation, information search etc can operate this system.

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文中结合MAPGIS介绍了图层的概念、图层操作，并重点阐述了如何划分图层及图层划分意义。

Based on MAPGIS, this paper introduces concept and operation of map layer and chiefly describes how to divide map layer and significance of dividing map layer.

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