The databases/p5-DBD-mysql port
p5-DBD-mysql-4.050p0 – MySQL drivers for the Perl DBI
DBD::mysql are the Perl5 Database Interface drivers for the mysql
In other words: DBD::mysql are an interface between the Perl
programming language and the mysql programming API that come with
the mysql relational database management systems. Most functions
provided by the respective programming API's are supported.