serega_sheypak wrote:That sounds like it could and possibly should be modelled like a ManyToMany relationship to me. That would move the relationship between two nodes to a separate join table.
2. A leaf can have several parents or children
serega_sheypak wrote:Fixed that for you. I'm leaving it at that, perhaps someone else has an alternative suggestion that agrees more with you. Good luck!
I don't thing that it's the stuff I need. They are not discussing hierarchial relations with many parents and many children...