Federated database systems for managing distributed, heterogeneous, and autonomous databases
ACM Computing Surveys (CSUR) - Special issue on heterogeneous databases
WWW '99 Proceedings of the eighth international conference on World Wide Web
Interconnecting Heterogeneous Information Systems
Interconnecting Heterogeneous Information Systems
Handling semantic heterogeneities using declarative agreements
Proceedings of the 10th ACM international symposium on Advances in geographic information systems
Ontologies: A Silver Bullet for Knowledge Management and Electronic Commerce
Ontologies: A Silver Bullet for Knowledge Management and Electronic Commerce
Resolving schema and value heterogeneities for XML web querying
dg.o '03 Proceedings of the 2003 annual national conference on Digital government research
Resolving schema and value heterogeneities for XML web querying
dg.o '03 Proceedings of the 2003 annual national conference on Digital government research
Dealing with geospatial information in the semantic web
AOW '05 Proceedings of the 2005 Australasian Ontology Workshop - Volume 58
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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.