Title :
The results of geographical information system queries
Author_Institution :
France-Telecom Inst. Nat. des Telecommun., Evry, France
Abstract :
The author studies the definition of the results for GIS queries. They are based on a graphical representation. Such a representation may introduce some ambiguities depending on the class of queries. He studies two different ambiguities due to the aggregate functions and the notion of homogeneity
Keywords :
geographic information systems; query languages; query processing; visual databases; visual languages; GIS queries; SQL; aggregate functions; geographical information system queries; graphical representation; homogeneity; user friendly query language; Aggregates; Buildings; Cities and towns; Database languages; Displays; Geographic Information Systems; Information systems; Management information systems; Roads; Spatial databases;
Conference_Titel :
Visual Languages, 1993., Proceedings 1993 IEEE Symposium on
Conference_Location :
Bergen
Print_ISBN :
0-8186-3970-9
DOI :
10.1109/VL.1993.269564
