Extending XML Web Querying to Heterogeneous Geospatial Information

This paper describes a Web-based query system for semantically heterogeneous geospatial data. Our goal is to provide DBMS type query capabilities to a proposed statewide land information system. One of the main problems in querying distributed local data sources is the difference in semantics describing the characteristics (attributes) of spatial objects between various jurisdictions. To address this problem, we developed a mapping technique and tool to resolve semantics at the value level. Semantic resolution is incorporated into an XML Web-based DBMS. Our method works for any heterogeneous set of values, but we use land use codes from multiple classification systems as an example.

• Type: Conference
• Year: 2003
• Where: DGO
• Authors: Nancy Wiegand, Naijun Zhou, Stephen J. Ventura, Isabel F. Cruz
• Keywords: DBMS Type Query, DGO 2003, DGO 2007, Heterogeneous Geospatial Data, XML Web-based DBMS