VirGIS: mediation for geographical information systems

Omar Boucelma · Mehdi Essid · Zoé Lacroix · J. Vinel · Jean-Yves Garinet · Abdelkader Bétari

11 citations0/0 files storedProceedings - International Conference on Data Engineering

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Geographic Information Systems Studies Advanced Database Systems and Queries Data Management and Algorithms

Abstract

Geographic data have been collected for centuries and are available in a wide variety of formats and supports. VirGIS provides an integrated view of the data, and a geographical query language to access and manipulate integrated geographical data. Typical mediation approaches are data-driven and do not address the problem of integration of query capabilities. Geographic languages provided by GIS usually express spatial selections, metric or topological queries, allocations, etc., in addition to standard data manipulation. the VirGIS mediation system aims to integrate geographical query capabilities with GQuery, a XML geographical query language, and recent specifications published by the Open GIS Consortium (OGC) and adopted by major GIS vendors.

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2002A WFS-based mediation system for GIS interoperability

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2006Querying Mediated Geographic Data Sources 2005Mediation for Online Geoservices

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