摘要
从表达现实世界的方式和解决具体问题的方法这两方面出发,论述了GIS逻辑数据模型和物理数据模型的设计与表达。根据数据的使用方式决定地理数据模型的选取,以建立面向对象的地理要素模型为例来说明建模的过程,提高模型的实用性。
This paper presents the design and expression of GIS logical data model and physical data model in view of the expression mode of real world and the practical method .The proper Geographic data model is Adopted based on the usage of the data .It takes the object-oriented geographic feature model as example, to describe the modeling approach ,the developing process and the effort to enhance the model's practicability.
出处
《海洋测绘》
2004年第1期20-22,30,共4页
Hydrographic Surveying and Charting
