$dbcontext = Bio::DB::SimpleDBContext->new(
                        -database => 'biosql'
                        -user     => 'xxxx',
                        -pass     => 'xxxx',
                        -dbname   => 'biosql',
                        -host     => 'localhost',
                        -port     => 3306,    # optional
                        -driver   => 'mysql',
            );