The following was generated by annotating the source code of the SQO-OSS project. Georgios Gousios, who created it, wrote:

> I've used UMLgraph to generate an E-R diagram out of the DAOs we use in SQO-OSS. I've just annotated a few classes with @assoc tags, removed the super class DAObject from all entities with sed, did some tweaking by hand in the .dot output, et voila, an E-R depicting almost 30 classes in less than 30 minutes!

UML diagram showing an entity relationship diagram