A study on spatial data management in the development of component GIS

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.