Wladimir Meyer,  Milton Ramirez,  Jano Souza. 

Grid computing can be seen nowadays as a romising distributed environment to form federated GIS. As supposed, spatial query processing within this distributed environment is a challenge. This paper presents Spatial Query Broker (SQB), an architecture for spatial distributed query processing in a grid computing context. This implementation aims at executing spatial queries in a dynamic manner.

http://www.geoinfo.info/geoinfo2006/papers/p44.pdf

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