| Visualisation and editing of 3D objects organised in a DBMS (2002) | |||||||||
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| Visualisation and editing objects organised DBMS Jantien Stoter and Siyka Zlatanova Delft University Technology The Netherlands Abstract The developments DBMSs are quite significant the last several years Mainstream DBMSs Oracle IBM Informix Ingres have already implemented spatial data types and spatial operators similar the OpenGIS Consortium Simple Features Specification for SQL The implementation consists SQL extension that supports storage retrieval query and update simple spatial features points lines and polygons Currently the implementations are only point line and polygon are supported However most DBMSs coordinates can used represent features points lines and polygons Specifications for complex features topology well for geometry objects are currently being developed the OpenGIS Consortium operation with ISO Furthermore many frond end applications CAD GIS offer tools access edit and post data the DBMS The greatest benefits such DBMS GIS CAD integration are the area visualisation and data editing Having data stored DBMS the user has the possibility extract only limited set data and thus critically reduce the time for loading Locating editing and examining particular object also becomes quick simple and convenient This paper summarises our experiments storage and visualisation data using the current tools provided Oracle Spatial MicroStation Geographics Bentley ArcGIS ESRI and VRML Introduction Spatial data which used GISs are mostly part complete work and information | |||||||||
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