SWS-GIS: uma arquitetura baseada em serviços para uma federação de Spatial Data Infrastructures.

Abstract

The huge volume of spatial data available in the Web has increasing rapidly. Currently, the Web has been used not only for searching documents but also for service provision, known as Web services. These services are published in a directory, and may be automatically discovered. Particularly, in the spatial domain, the possible use of such services has demanded research on how to distribute and interoperate spatial data. Therefore, Spatial Data Infrastructures (SDI) have been proposed in order to tackle these problems. However the lack of semantics in such SDI is still an open issue. In this dissertation, we propose SWS-GIS, which is a semantic SDI using service-oriented architecture based on Web services. SWS-GIS enables distributed spatial queries over catalogues, which take part in a federation of both spatial data and services. The federation data model is according to a hierarchical ontology, which enables concept mappings.