I would like to use drupal for creating a website that maintains complex data structures. I have a lot of small pieces of data which are related in many ways (including many-to-many-relationships). I'm relatively new to drupal.
It seems that the entity API module together with the Entity Reference module should do it. But both seem to have no API documentation, and the latter seems to be a Chaos Tools plugin which makes it necessary to understand even a further concept without a systematic documentation. I think there must be an easier solution for representing complex data structures (like `models` in the framework django), but I cannot find any.
1.Is there an easy and well-documented solution for representing complex data-structures, including many-to-many-relationships, in drupal?
2.If not: are there systematic API documentations for the Entity API module, the Entity Reference module and for Chaos Tools plugins?
3.Or would it be useful if I contribute a self-made simplified Entity API?