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Communication between end-users and spatial databases raises important and speciic issues. Unlike classical systems, it requires strong cooperation between two major tools: spatial query language and graphical interface. This paper addresses the problem of building an interactive querying system for spatial databases with an open architecture. We focus on(More)
r esum e. Une evaluation de performances de l'op eration de point e est r ealis ee pour dii erentes structures de donn ees spatiales. Parmi les quatre index test es, deux sont de type quadtree Sam90], dont un est ressemble a la structure Excell Hi erarchique Tam83]. Les deux autres structures sont des variantes connues de l'arbre-R appel ees arbre-R*(More)
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