| 简化电子地图数据模型 |
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| 引用本文： | 赵生妹. 简化电子地图数据模型[J]. 南京邮电大学学报(自然科学版), 1998, 0(1) |
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| 作者姓名： | 赵生妹 |
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| 作者单位： | 南京邮电学院信息工程系 |
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| 摘 要： | 提出了实现电子地图数据存储的一种实用模型。该模型将地图中的地理元素作为对象管理，整个模型分为高层地图元素对象、投影过程和低层几何对象三部分。其中每个几何对象都与一个高层地图元素对象相对应。几何对象将它的空间数据用群进行管理，非空间数据用常规关系数据库存储。通过对象内在唯一标识符进行两种存储的互访和操作。
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| 关 键 词： | 计算机绘图，电子地图，数据模型，面向对象技术 |
A Simplified Data Model for Electronic Map System |
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| Zhao Shengmei. A Simplified Data Model for Electronic Map System[J]. JJournal of Nanjing University of Posts and Telecommunications, 1998, 0(1) |
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| Authors: | Zhao Shengmei |
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| Affiliation: | Zhao Shengmei Department of Information Engineering,Nanjing Institute of Posts and Telecommunications,210003,Nanjing,PRC |
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| Abstract: | In this paper, an objected oriented data model, which consists of three parts, is presented. The three parts are geographic element objects, geometric objects and projections between them. A collection scheme is applied in managing the spatial data of geometric object, which corresponds to one geographic element object manipulated by conventional RDBMS. The detail projection procedure is also discussed. |
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| Keywords: | Computer graphic Electronic map Data model Object oriented technology |
| 本文献已被 CNKI 等数据库收录！ |
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