[Zope] Z-SQL Method performance

[Oliver Bleutgen]

Igor Leturia wrote:
> I've had that same problem many times, it was not the SQL query that was
> slow but the dtml rendering, and I've always been optimizing that
> rendering one way or the other. But I've never used an External Method
> (because I don't know what it is). Could someone explain a bit more of
> it?

Basically they are python code on the filesystem which can be used from 
within zope:

http://www.zope.org/Documentation/How-To/ExternalMethods

cheers,
oliver