Proceedings of the Second International Conference on Interoperating Geographic Information Systems
INTEROP '99 Proceedings of the Second International Conference on Interoperating Geographic Information Systems
Querying Heterogeneous Information Sources Using Source Descriptions
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
SpaceTag: An Overlaid Virtual System and its Applications
ICMCS '99 Proceedings of the IEEE International Conference on Multimedia Computing and Systems - Volume 2
Conceptual Integration of Multiple Partial Geometric Models
ER '02 Proceedings of the 21st International Conference on Conceptual Modeling
Geometrically Enhanced Conceptual Modelling
ER '09 Proceedings of the 28th International Conference on Conceptual Modeling
Transforming geometrically enhanced conceptual model schemas to GML
Conceptual Modelling and Its Theoretical Foundations
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Rapid development of information technology such as mobile terminals and GPS systems enabled information services that provide location-oriented information based on users' positions. In this paper, we propose an approach for the modeling of information integration applications that incorporate spatial information sources in addition to conventional information sources to provide appropriate location-oriented information to users. First, we present our approach to the modeling of spatial information sources based on the source description framework. It provides a way to represent the content and the query capability of a spatial information source in a descriptive manner. Then we show a query processing scheme that finds a combination of information sources to respond to given queries and to evaluate them efficiently.