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

9402478 ADAMS该项目结合了地理信息系统在工程应用中的三个研究领域：基于特征而不是基于层的地理信息系统方法，面向对象而不是关系数据库建模，以及使用数据库管理技术作为地理信息系统的框架。新技术和新模式正在被结合在一起。本项目采用最先进的面向对象数据库管理系统技术，全面实现和测试了地理信息系统的特征模型。该特征模型能够表达传统的基于层的地理信息系统所缺乏的非拓扑关系和语义关系。由于关注的是实体而不是空间表示，因此特征模型提升并启用了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.