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Aug 28, 2008, 05:56 #40AnonymousSitePoint Community Guest
Excellent article which is a great primer on storing hierarchical data.
However, I ran into a snag using the mptta. Recursion may not be required to query the tree, but it is for building or modifying the tree. I wrote about a different method. I'll post a link as soon as Sitepoint lets me. This method uses the path enumeration model, with a twist. Enjoy.