一种基于RDBMS的面向对象空间数据模型

A new object-oriented spatial data model based on RDBMS

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。实践证明:该模型吸收了对象关系数据库高效、安全和协同合作等优势,提高了空间数据使用的灵活性。

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 based on RDBMS.The model absorbs the superiority of DBMS such as efficiency,security and so on,and makes the spatial data more usable.