Recently, attention has been focused on spatial databases which combine conventional and spatial data. The need for spatial query languages has been identified in several different application domain as Geographic Information Systems (GISs) and Image Databases. Several extensions to the relational database query language SQL have been proposed to serve as a spatial query language. The large availability on the market place of the relational database technology is the major reason why an SQL-based spatial query language is welcome both from the GIS vendors and the GIS user community. Recent SQL extensions convinced us that it is the right time for working on the standardization of SQL-based spatial query languages. This paper sets a kernel of basic features for the creation of a standard and compares a large number of SQL spatial extensions according to such features.

Towards a standard for SQL-based spatial query languages

CLEMENTINI, ELISEO
1992-01-01

Abstract

Recently, attention has been focused on spatial databases which combine conventional and spatial data. The need for spatial query languages has been identified in several different application domain as Geographic Information Systems (GISs) and Image Databases. Several extensions to the relational database query language SQL have been proposed to serve as a spatial query language. The large availability on the market place of the relational database technology is the major reason why an SQL-based spatial query language is welcome both from the GIS vendors and the GIS user community. Recent SQL extensions convinced us that it is the right time for working on the standardization of SQL-based spatial query languages. This paper sets a kernel of basic features for the creation of a standard and compares a large number of SQL spatial extensions according to such features.
1992
0-89791-502-X
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/30320
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