[SoC] uDig GSoC / final report

Andrea Aime 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 ;-)


Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.

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