@Mike: the attempts (at least the ones I have seen) to store hierarchical data in relations [1] don't seem very intuitive to me. At least when it comes to query the data. Anyway: I would appreciate to be convinced by something else. However, I am afraid to kick off a completely different (yet interesting) discussion here. My current issue is how to access the additional fields of my M2M relationship. In addition to that I will think about hierarchical data in relational databases ;-)
Thanks, Simon
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http://www.slideshare.net/billkarwin/models-for-hierarchical-data
-- Thanks, Simon
--
http://www.slideshare.net/billkarwin/models-for-hierarchical-data
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