Hello,
I have noticed that the interfaces page contains broken links for ruby and
xbase :
http://ruby.scripting.ca/postgres/
http://www.idep.org.uk/xbase/datpage/xbpgsql.html
For ruby, the new link seems to be http://rubyforge.org/projects/ruby-pg
Unfortunately I couldn't find a replacement link for the xbase interface.
Cheers,
Adrian Maier