“Now that you have already chosen your preferred database
engine, let’s see how to connect to the database from a Perl
script.”
“Perl was widely enhanced with database connectivity capability
by Tim Bunce. Tim created the DBI interface, which allows
programmers to have four totally independent layers when designing
applications. These layers protect hackers from picky and tricky
coding details when connecting to databases from different vendors,
and also helps them achieve code reusability when switching
databases.”