Why not SQL! |
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| Authors: | MAX J EGENHOFER |
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| Institution: | National Center for Geographic Information and Analysis and Department of Surveying Engineering , Boardman Hall, University of Maine , Orono, ME, 04469, U.S.A. |
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| Abstract: | Abstract The application of traditional database query languages, primarily the Structured Query Language SQL, for geographical information systems (GIS) and other non–standard database applications has been tried unsuccessfully; therefore, several extensions to the relational database query language SQL have been proposed to serve as a spatial query language. It is argued that the SQL framework is inappropriate for an interactive query language for a GIS and an extended SQL is at best a short term solution. Any spatial SQL dialect has a number of serious deficiencies, particularly the patches to incorporate the necessary spatial concepts into SQL. |
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