Doctrine is an enterprise object persistence layer for PHP 5.3.2+ that supports persisting PHP objects to relational databases like MySQL, Oracle, etc. and document based storage systems like MongoDB as well. Dive in head first with Juozas and learn the Doctrine way in his workshop. From basics to best practices, performance optimization and legacy applications migration. http://conference.phpnw.org.uk/phpnw11/schedule/juozas-kaziukenas/ http://www.slideshare.net/juokaz/doctrine-2-phpnw11 Less