The creation and management of geospatial data is always tedious requires huge budget, time and manual efforts. Therefore, the future of several important services including location-based services and disaster information system, which need geospatial data remains a matter of concern. Expert geoportal system (EGPS) is a tool based on a sophisticated approach for providing diverse geospatial se...

Various non deterministic aspects of object creation in database trans formations are discussed from a modeling as well as from an expressive