In Portland tomorrow night:
Robert Buels presents "The Amazing Miracle of DBIx::Class"
Rob will give an introduction to and overview of DBIx::Class. It's an object-relational mapping framework, much better than the old Class::DBI, and it will make your life easier if you are currently writing a lot of SQL in your Perl.
In Omaha tonight:
Randal "merlyn" Schwartz (who lives in Portland) presents "Forget the ORM! Persistent Data with non-traditional databases."
What an Object-Relational Mapper is, why it sucks, and a couple dozen alternatives (most open source, many with Perl bindings).