Roughly two years ago, I prepared a diagram of the dependencies in the then-current version of Drupal e-Commerce (eC) for Drupal 4.6.

Now, with other eC projects looming ahead, a possible session about eC at Szeged, and eC 4 being in alpha, I figured it was time to update the model. Boy, has it changed ! Click the thumbnail for the full-size view.

UPDATED for eC4 in new post

The Drupal ecommerce module suite is a rapidly evolving and quite massive part of Drupal, and newcoming developers may be overwhelmed by the sheer number of modules included in the suite. This UML dependency diagram chart should help understand how the modules fit together.

For anyone trying to understand the inner working of the Drupal e-Commerce 4.6.* module, a pair of UML data model diagrams should be really helpful.

Mambo CMS (Mamboserver, Joomla) is an important Open Source CMS these days, and it is built on a complex data model. So I tried to abstract the main entities and model them in the form of an abused UML class diagram. Have a look.