Articles about cdbi
There was an introductory article by Tony Bowden on Perl.com in November 2001.
Michael Schilli wrote an article on Class::DBI in the German LinuxMagazin.
Kake Pugh had a Perl.com article on "How To Avoid Writing Code" in July 2003 which featured Class::DBI.
Randal Schwartz columns mentioning Class::DBI (an ever-increasing list):
Jason's Kwiki featured a nice introduction, but it is currently unreachable since he traded his wiki for a blog.
For those interested in Class::DBI's innards, check out Schwern's original TPC paper. Although much of it is now out of date, the basic principles still apply.