in reply to On Databases
I like DBD::SQLite very much. It's extremely easy to install, and when you move a project over to another box, you don't need to copy the database separately. It doesn't work with a server, but that is okay for what I do with it. SQLite is fast and feature-rich and worth checking out.
Depending on the application, you may find Class::DBI very useful. Perhaps you want to write the queries yourself. In that case, have a look at DBIx::Simple. If you need extreme power or extreme speed, learn how to use DBI directly.