Oracle Spatial - SRID
- From: Eriovaldo Andrietta <ecandrietta@xxxxxxxxx>
- To: ORACLE-L <oracle-l@xxxxxxxxxxxxx>
- Date: Mon, 23 Nov 2009 21:15:33 -0200
Hi friends,
Is there any performance impact using SRID 8302 for polygons composed by
x,y coordinates.
8302 is the value for geodesic cartesian coordinates and x,y is related a
projected cartesian coordinates
I saw in the net this answer, but it does not refer to performance.
http://wiki.oracle.com/thread/1108598/SDO_SRID+use+it+or+not%3F
Does anyone have experience with performance based on SRID information ?
I also saw that for projected system coordinate the math is easier than
geodesic system.
Is it true ?
When must I use geodesic SRID or projected SRID ?
Tks
Eriovaldo
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