机构地区: 上海师范大学旅游学院
出 处: 《杭州师范学院学报(自然科学版)》 2004年第4期329-332,共4页
摘 要: 组件式地理信息系统有三种对空间数据的管理和访问方式,取决于GIS系统的规模和应用需求.MapObjects是一个功能强大的地理信息系统组件,它支持多种数据访问方法.在基于该组件的校园地下管线地理信息系统开发中,将图形数据和属性数据在管理方式上进行分割,扩展了组件式GIS的数据库访问机制,对建立灵活的小型地理信息系统具有一定的通用性. There are three optional ways of spatial data management and its access in component GIS, which are decided by the scale and application needs of the system. MapObjects, which supports data access with ADO(ActiveX Data Objects), is a powerful components of GIS. During the development of the underground pipes management GIS, with MapObjects as the basis, the spatial features and attributes of the pipes are separated, and the mechanism of database in component GIS is extended. This study gives a common method in constructing light GIS.