Steven Willis (7/18/2013)
Maybe this link will help.http://www.sqlservercentral.com/articles/Hierarchy/94040/[/url]
Thanks! I found that link very helpful. The Nested Sets structure is not appropriate for me case, as I don't have a strict hierarchy, but a lattice. The solution presented in Part 2 seems promising, but I'm still trying to digest the primer materials.