Författare
Jungert E
Utgivare
Försvarets forskningsanstalt (FOA)
Utgivningsår
1990-03
Abstract:
The query language described and discussed here is designed for a geographical information system. The basic map data structure is object-oriented, homo-geneous and raster-based. Because of the homogeneous map data structure queries can be applied in a more or less generic way, that is, queries can be applied to all map data structures regardless of their type.
Furthermore, the query language design is based on a visual interaction technique, which gives a simpler structure compared to conventional query languages.
Detaljer
- Titel:
- Towards a Visual Query Language for an Object-Oriented Geographical Information System
- Författare:
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Utgivare:
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Utgivningsår:
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1990-03
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Omfång:
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14 s
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Serie:
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FOA Rapport
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Klassificering:
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Naturvetenskap
>
Geografi
>
GIS
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Nyckelord:
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Serie nr:
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D 30565-3.4