[SoC] uDig GSoC / final report
aaime at opengeo.org
Wed Aug 18 04:19:50 EDT 2010
Craig Taverner ha scritto:
> Unfortunately not. It has been on the radar for a long time, but no-one
> has gotten 'round to that yet. I personally think that in principle it
> should be able to outperform other systems in many ways. However, I
> doubt it will outperform everything in every way. Some things are suited
> to graph databases and others are less suited. One rule of thumb I have
> is that if a query is likely to hit data that is close (in the graph),
> then it should perform much better than a relational database (or be
> easy to optimize to perform better). For this reason, our indices are
> simply additional graph structures that make sure that spatial
> 'closeness' is represented in the graph.
> I will see if I can get some initial performance numbers out in time for
> the FOSS4G presentation, as they are clearly interesting.
Cool. If I may make a suggestion, try comparing against a local PostGIS
database using a few GB worth of dataset. r-tree vs network structure,
let's see what does better ;-)
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