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Neighborhood query and analysis with GeoSAL, a spatial database language

  • Zhexue Huang
  • Per Svensson
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 692)

Abstract

Although some database query languages provide basic functions useful for statistical data analysis and others contain spatial query capabilities, there is as yet no database language implementation which satisfies even basic requirements of spatial analysis.

GeoSAL is a database language being designed to address the solution of descriptive data analysis tasks in general, and spatial analysis problems in particular. The objective of the development of GeoSAL is to free analyst users from procedural programming while retaining a systematic and parsimonious language structure embedding fundamental as well as domain-specific concepts.

A number of spatial queries and analyses are characterized by the application of neighborhood conditions to spatial objects. Thus, the specification and evaluation of neighborhood conditions within a spatial database language is an important issue in spatial database research.

In this paper, several kinds of neighboring relationships are formulated in GeoSAL and the use of the resulting expressions is shown in examples. The capacity of GeoSAL to perform spatial operations involving non-trivial neighborhood conditions is thus demonstrated.

Keywords

Voronoi Diagram Spatial Object Spatial Query Voronoi Region Neighborhood Query 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • Zhexue Huang
    • 1
  • Per Svensson
    • 2
  1. 1.Environmental and Natural Resources Information SystemsRoyal Institute of TechnologyStockholmSweden
  2. 2.Division of Applied Mathematics and Data ProcessingNational Defence Research EstablishmentSundbybergSweden

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