Object-Oriented Database Management Technology to Support Feature-Based GIS

9402478亚当斯这个项目集成了三个领域的研究地理信息系统的工程应用：一个功能为基础，而不是一个基于层的方法，以地理信息系统，面向对象，而不是关系数据库建模，并使用数据库管理技术作为GIS的框架。 新技术和新模式正在融合。 该项目充分实施和测试了国家的最先进的面向对象的数据库管理系统技术内的地理信息系统的功能模型。该特征模型能够表达传统基于图层的地理信息系统所缺少的非拓扑和语义关系。 由于关注的是实体而不是空间表示，因此特征模型促进并支持具有非空间属性和关系的复杂实体。

9402478 Adams This project integrates three areas of research for Geographic Information Systems for engineering applications: a feature-based rather than a layer-based approach to GIS, object-oriented rather than relational database modeling, and the use of database management technology as the framework for GIS. New Technology and models are being brought together. This project fully implements and tests a feature model for GIS within State-of-the-art object-oriented database management system technology. The feature model can represent non-topological and semantic relationships which are missing in traditional layer-based GISs. Because of the focus on the entity rather than the spatial representation, the feature model promotes and enables complex entities with non-spatial attributes and relationships.