DrupalCon Paris 2009 Session: Intro to the Field API for Module Developers (Part 1)
DrupalCon Paris Session presented by Barry Jaspan
Drupal 7 includes the new Field API which provides "CCK functionality" in core. The Field API supports attaching custom data fields to nodes, users, remote data objects, and any other type of entity. This session introduces the Field API for module developers and shows how it differs from Drupal 6's "hook_nodeapi" approach.