Based on the theory and method of abstract, inheritance and polymorphism of object-oriented technology, this paper brings the RDBMS elements of view, relation, table and role into the model of spatial data in GIS, and develops a new spatial data model bas
Based on the theory and method of abstract, inheritance and polymorphism of object-oriented technology, this paper brings the RDBMS elements of view, relation, table and role into the model of spatial data in GIS, and develops a new spatial data model bas
摘要本文利用面向对象的抽象、继承和多态等理论和方法，将数据库中的视图、关联、表、角色等概念引入到面向对象的空间数据模型中，提出了一种面向应用、面向主题的基于对象关系数据库的空间数据模型。