[postgis-devel] Oracle SDO_GEOMETRY vs PostGIS WKT

Andrea Peri aperi2007 at gmail.com
Wed Aug 25 04:53:02 PDT 2010


>Yes, Oracle Spatial's data model seems to be a topological model [1].
>Thanks for pointing me to that fact. As I said, I find it some
>tangled, and I'm looking for the reason. Or am I talking non-sense?

>
>Best regards,
>Jorge


Hi,

the topological model of Oracle is a model with Face-Edges-Nodes.

But it don't use the "SDO_Geometry",
but instead it use the other type "SDO_TOPO_Geometry".

so if you load using a SDO_Geometry the lines between two polygons are
duplicated.

If you don't want the duplication you must use SDO_TopoGeometry instead of
SDO_Geometry.

I don't know if a "SDO_Topo_Geometry" is readable as a kind of
"SDO_Geometry".

Regards,


-- 
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Andrea Peri
. . . . . . . . .
qwerty àèìòù
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