<li><a href="http://search.cpan.org/search?dist=DBI">DBI</a>
<li><a href="http://search.cpan.org/search?mode=module&query=DBD">DBD for your database engine</a> (<a href="http://search.cpan.org/search?dist=DBD-Pg">DBD::Pg</a> for PostgreSQL, <a href="http://search.cpan.org/search?dist=DBD-mysql">DBD::mysql</a> for MySQL)
<li><a href="http://search.cpan.org/search?dist=DBIx-DataSource">DBIx-DataSource</a>
<li><a href="http://search.cpan.org/search?dist=DBI">DBI</a>
<li><a href="http://search.cpan.org/search?mode=module&query=DBD">DBD for your database engine</a> (<a href="http://search.cpan.org/search?dist=DBD-Pg">DBD::Pg</a> for PostgreSQL, <a href="http://search.cpan.org/search?dist=DBD-mysql">DBD::mysql</a> for MySQL)
<li><a href="http://search.cpan.org/search?dist=DBIx-DataSource">DBIx-DataSource</a>