...whole books, hundreds of chapters, and thousands of Internet articles have been written on the subject and it's impossible for me to cover all of the aspects of the subject in a single article...
...I have to assume that you already know what the Adjacency List and Nested Sets structures are and how they are used...
Can anyone recommend a primer article or two on Adjacency List and Nested Sets structures?
...One of the symptoms of an approaching nervous breakdown is the belief that ones work is terribly important.... Bertrand Russell