[kragen]

I don't have any experience using SQL for that kind of thing, but in http://canonical.org/~kragen/sw/dev3/sqlitescene.py I'm getting a bit over 800 frames per second on my laptop, including rotating the scene in SQL — about 2400 queries per second — so I think it's plausible to use SQLite for this kind of thing. But I don't know if that kind of performance is consistent, which is a big deal for real-time graphics. (The worst-case frame time I get on that data set over sixty thousand frames is 3.8 ms though so it might be OK.)

Using SQL for this kind of thing would definitely be a very weird choice. So it's super awesome and I look forward to hearing about whether it works out.