Organization and Application Development of Heterogeneous Geography Spatial Data Based on PostGIS

PostGIS is a spatial extension of PostgreSQL which is an open source relational database system. This paper analyzes several existing modes of heterogeneous spatial data which currently works in the field of geographic information,proposes an integrated application solution of multi- source spatial data for PostGIS database combining the method of PostGIS spatial data organization,and finally conducts a visual application development practice in environment of. Net development.