根据vc环境，建立点线区空间数据库，实现拓扑关系查询等功能-According to vc environment and create a dotted line area spatial database queries and other functions to achieve topological relations

基于access数据库，对点线面的操作，包括添加，删除，移动点线面数据-Access database based on points, lines and surface operations, including add, delete, move points, lines and surface data

面向对象数据库实验，建立点线面模型,可以用来学习面向对象数据库-Object-oriented database experiments, point, line and plane model