LWP::Simple does essentially the same job as wget but gets the data straight into Perl.

DBI does database stuff, but needs a driver to work with so you need to pick the DBD module to match the database you are using. Use DBD::mysql for mysql, but if you have a choice I'd start with SQLite (DBD::SQLite) because it is stand alone and requires no set up. MySQL can be hard to get going on some systems.