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Geographic Information Systems

Geographic information systems (GIS) are being used to efficiently manage various types of geographical data. This data is characterized by its complex structure, a high degree of heterogeneity as well as its typically large volume. A major requirement for GIS is efficient support for spatial access which is not well supported in current DBMS.

In a cooperation with the Institute of Applied Geodesy, branch office Leipzig, we investigate how the ATKIS (Authoritative Topographic-Cartographic Information System) data model can be implemented. ATKIS is a standard for the modeling of landscapes within digital landscape maps and the modeling of map content within digital maps. Objects in landscapes are described using the ATKIS Object Class Catalogue (ATKIS-OK) while map objects are described using the ATKIS Symbol Catalogue (ATKIS-SK). One study focussed on a co-existence approach between the commercial GIS ARCINFO and a relational DBMS. This is being compared with an integrated model based on an object-oriented DBMS. Of special interest is support of temporal aspects in order to handle different versions of cartographic information in a flexible way.
 
 

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