@dbu and @lsmith from Liip will present the php content repository API (PHPCR, cf. http://phpcr.github.com) and usage examples within symfony.
The PHPCR specification defines an API that combines the power of NoSQL databases with hierarchical data structures and versioning, powerful search and other features. Content repositories, like Midgard2 or Jackrabbit, can implement the API to provide generic access to their content. Using PHPCR, applications can focus on the application logic and use the API to quickly implement CMS functionality.