Geographic information integration and publishing based on GML and SVG

The complexity and richness of spatial data models and geographic information systems (GIS) together with the popularity of WWW have led to an increasing number of heterogeneous and autonomous geo-referenced information sources that spread over the Internet. How to integrate and publish these geographic information to facilitate accessing, sharing, and interoperability is still a challenge to both the research community and the industry. In this paper, we propose a framework based on GML and SVG technologies for integrating and publishing distributed geographic information. Here, GML is adopted as the common format for spatial information wrapping and mediation, SVG is used as a Web-map publishing format that can be processed and displayed in Web browser, and Oracle Spatial is used to implement the spatial relation oriented query and the caching mechanism. A prototype is also implemented based on the proposed framework.