G'day Ben,

On 11/01/2010, at 4:26 , Ben Harper wrote:

> Wouldn't it be the right thing to have spatial_ref_sys.srid be an auto 
> increment field?

I would guess it should be unique (and possibly even a primary key?), but I 
don't think auto-increment makes sense - better to have a system where people 
could provide new (or at least useful) projection information into a standard 
repository, and then they could be assigned a standard number.

You might want to look at this : http://www.spatialreference.org/

and if you want to contribute to epsg lists I think you go here: 
http://www.epsg.org/Geodetic.html

cheers

Ben



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