Mike, > I'm curious what kind of performance differences there would be over > using something like the nested-set model? > > Would this be faster, or slower?
The answer is "yes". ;-) Which tree structures you use depends on what you're trying to accomplish and what your use case is. There are some structures (for example, heirarchical org charts) for which nested sets can't be beat. There are plenty of reasons to implement other tree structures, such as graphs, cycles, and delimited lists depending on what you're trying to depict. What WITH is going to "replace", if anything, is the simple adjacency list structure. -- Josh Berkus Aglio Database Solutions San Francisco ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
