Nick,
if you need very fast spatial queries (spherical) you may use our
Q3C module for POstgreSQL (q3c.sf.net). We use it for providing access
to very big astronomical catalogs.
Oleg
On Tue, 5 Sep 2006, Nick Bower wrote:
> We're considering using Postgresql for storing gridded metadata - each point
> of our grids has a variety of metadata attached to it (including lat/lon,
> measurements, etc) and would constitute a record in Postgresql+Postgis.
>
> Size-wise, grids are about 4000x700 and are collected twice daily over say 10
> years. As mentioned, each record would have up to 50 metadata attributes
> (columns) including geom, floats, varchars etc.
>
> So given 4000x700x2x365x10 > 2 billion, is this going to be a problem if we
> will be wanting to query on datetimes, Postgis lat/lon, and integer-based
> metadata flags?
>
> If however I'm forced to sub-sample the grid, what rule of thumb should I be
> looking to be constrained by?
>
> Thanks for any pointers, Nick
>
> PS - Feel free to throw in any other ideas of grid-suitable databases :)
>
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>
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>
Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83
