[udig-users] Difference between Udig CFQ & PostGIS SFSQL

["Steven De Vriendt" <gisaalter@xxxxxxxxx>]

Hi list,

I'm writing a report on the database connectivity of Udig and PostGIS when both are used together.
I'm not sure on the hanlding of queries, however. I've looked up the manual of Udig and it mentions
that CFQ is used as query language, while PostGIS makes use of SFSQL. Can someone help
me to clarify the difference and why SFSQL isn't used in Udig ?

Last question. When I make a new layer in Udig, how are attributes stored ? 
Is it preferable to use Udig in combination with a (spatial) database ?

Thanks
Steven