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一种面向对象的4层空间数据模型
引用本文:吴正升,崔铁军,郭婧. 一种面向对象的4层空间数据模型[J]. 测绘学院学报, 2006, 0(5)
作者姓名:吴正升  崔铁军  郭婧
作者单位:信息工程大学测绘学院 河南郑州450052
基金项目:河南省重大重点科技攻关项目(0423034200),信息工程大学测绘学院课题(Y0502)
摘    要:针对“空间数据是否要建立拓扑关系并在数据库中显式地存储记录”一直是G IS领域争论的问题,给出了解决方案:融合拓扑关系数据模型和面向实体数据模型,进而在分析和总结现有数据模型的基础上提出了一种面向对象的4层空间数据模型。对模型作了4个层次划分:几何对象、基本和复杂要素、分层与分区以及多尺度表达。模型具有3个特点,即多尺度描述地理空间;能描述不同要素层、不同区之间的关系;用户可根据实际情况自定义要素层拓扑关系。最后给出了模型在自主开发的地理数据库管理平台Geoinfo中的应用情况。

关 键 词:面向对象  几何对象  多尺度  空间数据模型

An Object-oriented Four-leveled Spatial Data Model
WU Zheng-sheng,CUI Tie-jun,GUO Jing. An Object-oriented Four-leveled Spatial Data Model[J]. Journal of Institute of Surveying and Mapping, 2006, 0(5)
Authors:WU Zheng-sheng  CUI Tie-jun  GUO Jing
Abstract:It is an controversial problem whether it is necessary to build topological relationship for spatial data and to store the relationship clearly in database.This paper puts forward a solution that the topological relationship data model and entity-oriented data model should be fused,and then an object-oriented four-leveled spatial data model is built based on original models.The four-leveled model includes two levels(geometric object,and simple and complex features) based on micro-data organization and two levels(layer and section,and multi-scale representation) based on macro-data organization.The proposed model has the following virtues: to represent the geographic space with multi-scale,to describe the relationship between the different layers and sections clearly,and to define the topological relationship types of layers by users.Finally,the model is used to our geographic database administration platform.
Keywords:object-oriented  geometric object  multi-scale  spatial data model
本文献已被 CNKI 等数据库收录!
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