Technology of Urban Spatial Information Sharing and Interchanging Based on Web Services and FETTL

This paper analyzes the architecture and key technologies of Web services, proposes a spatial data integration framework and the solution in finding, extracting, transforming, transmitting and loading (FETTL) spatial data based on Web services, and studies the principle of the framework, which may conveniently be used in the integration of all kinds of existing heterogeneous and developed new spatial data based on Web services.