01175naa a2200241 a 450000100080000000500110000800800410001910000250006024500480008526000090013330000160014252004680015865300200062665300340064665300140068065300130069465300320070765300170073970000230075670000200077970000200079977301140081918628662010-10-18       2007    bl uuuu     u00u1 u    #d1 aLEITE JÚNIOR, F. L.  aWS-GISbtowards a SOA-based SDI federation.  c2007  ap. 247-265.  aIn this paper we propose a service-oriented architecture for spatial data sharing. Hence, users may query a distributed catalog service, semantically enhanced with ontologies. The remainder of the paper is organized as follows. Section 2 presents our architecture. Section 3 addresses some implementation issues through a real example. Section 4 highlights related work. Finally, section 5 concludes the paper and discusses further work that should be undertaken.  aDados espaciais  aGeographic Information System  aOntologia  aOntology  aSpatial data infrastructure  aWeb services1 aBAPTISTA, C. de S.1 aSILVA, P. de A.1 aSILVA, E. R. da  tIn: DAVID JUNIOR, C. A.; MONTEIRO, A. M. V. (Ed.). Advances in Geoinformatics. Berlin: Springer-Verlag, 2007.