About twelve years ago I had a similar idea to the one in the article for a multiple concurrent junior-senior structure but it isn't as simple as the article pretends. A whole family of stored procedures are in fact needed to support the complexity the writer either isn't seeing or isn't presenting and the developer is more likely to be told to come up with something simpler, especially if the DBMS doesn't have stored procedures.

Update: the complexity I refer to occurs when the structure has to support insert update and delete by concurrent users.

Everything but the troll

In reply to Re^5: Trees in SQL, adjacency lists and sorting. by DungeonKeeper
in thread Trees in SQL, adjacency lists and sorting. by BUU

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