An introduction to Doctrine

I recently applied for a new job as a web developer due to my 2012 plans involving moving to the city and working in a more corporate environment. After a technical interview over the phone mainly relating around PHP, MySQL and some general OO questions the interviewer finished by telling me more about the company. When he told me they specialise in Drupal development and use Doctrine for some in-house software and development I decided I better go do some research.