Delegate Pattern

This is what happens with Perl if you try to connect to a database and don’t have the driver installed:
Chris@Chris-Mastos-iMac:~$ perl -MDBI -e ‘$db = DBI->connect(“dbi:Oracle:MM_WH”)’
install_driver(Oracle) failed: Can’t locate DBD/Oracle.pm in @INC (@INC contains: /opt/local/lib/perl5/site_perl/5.10.1/darwin-2level /opt/local/lib/perl5/site_perl/5.10.1 /opt/local/lib/perl5/vendor_perl/5.10.1/darwin-2level /opt/local/lib/perl5/vendor_perl/5.10.1 /opt/local/lib/perl5/vendor_perl /opt/local/lib/perl5/5.10.1/darwin-2level /opt/local/lib/perl5/5.10.1 .) at (eval 3) line 3.
Perhaps the DBD::Oracle perl module hasn’t been fully installed,
or [...]