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<html><head><title>ESRI ArcSDE</title></head><body bgcolor="#ffffff"><h1>ESRI ArcSDE</h1>OGR optionally supports reading ESRI ArcSDE database instances. ArcSDE isa middleware spatial solution for storing spatial data in a variety of backendrelational databases. The OGR ArcSDE driver depends on being built with theESRI provided ArcSDE client libraries. <p>ArcSDE instances are accessed with a datasource name of the followingform. The server, instance, username and password fields are required. The instance is the port number of the SDE server, which generally defaults to 5151. If the layer parameter is specified then the SDE driver is able to skip reading the summary metadata for each layer; skipping this step can be a significant time savings. <p><pre> SDE:server,instance,database,username,password,layer</pre>The OGR ArcSDE driver does not support reading CAD data (treated as BLOBattribute), annotation properties, measure values at vertices, or raster data. The ExecuteSQL() method does <b>not</b> get passed through to the underlying database. For now it is interpreted by the limited OGR SQL handler. Spatial indexes are used to accelerate spatial queries.<p>The driver has been tested with ArcSDE 9.x, and should work with newerversions, as well as ArcSDE 8.2 or 8.3. Both 2D and 3D geometries aresupported. Curve geometries are approximated as line strings (actually still TODO).<p></body></html>⌨️ 快捷键说明
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