A qualitative approach to integration in spatial databases

  • Baher A. El-Geresy
  • Alia I. Abdelmoty
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1460)


This paper considers the problem of integrating data sets which hold information about the same features in space. The approach proposed is based on allowing inconsistent data sets to coexist in the database and explicitly representing the nature of inconsistencies among those sets. A qualitative level of representation is created where the data sets can be integrated and manipulated using qualitative reasoning techniques. A systematic approach is used to identify classes and levels of consistency which can be checked in isolation. This provides the flexibility for two data sets to be integrated without necessarily being totally consistent in every aspect. The method is simple and can be used in many applications which incorporates the modelling and manipulation of spatial entities such as GIS, CAD and image databases.


Orientation Relation Adjacency Matrix Spatial Database Spatial Knowledge Qualitative Level 
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  1. 1.
    Flowerdew, R.: Spatial Data Intégration. Geographic Information Systems. 1 (1991), 375–387Google Scholar
  2. 2.
    Nyerges, T.: Schema Integration Analysis for the Development of GIS Databases. Int. J. GIS. 3(2) (1989), 153–183Google Scholar
  3. 3.
    Shepherd, I.D.H.: Information Integration and GIS. Geographic Information Systems, Longman Scientific. 1 (1991), 337–60Google Scholar
  4. 4.
    Abdelmoty, A. I., Jones, C.B.: Towards Maintaining Consistency in Spatial Databases. CIKM'97, ACM Press. (1997), 293–300Google Scholar
  5. 5.
    El-Geresy, B.A., Abdelmoty, A.I.: Order in Space: A General Formalism for Spatial Reasoning. IJAIT, World Scientific Publishing. 6(4), 423–450Google Scholar
  6. 6.
    El-Geresy, B.A.: The Space Algebra: Spatial Reasoning without Composition Tables. TAI'97, IEEE Computer Society Press. (1997), 67–74Google Scholar
  7. 7.
    Egenhofer, M.J., Clementini, E., Di Felice, P.: Evaluating Inconsistencies among Multiple Representations. SDH'94, IGU Commission of GIS. 2, (1994), 901–918Google Scholar
  8. 8.
    Kuijpers, B., Paredaens, J., den Bussche, J.V.: On topological elementary equivalence of spatial databases. ICDT '97, Springer Verlag. LNCS-1186, (1997), 432–446Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Baher A. El-Geresy
    • 1
  • Alia I. Abdelmoty
    • 1
  1. 1.School of ComputingUniversity of GlamorganTreforest, Mid GlamorganUK

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