Leif Biberg Kristensen, in the usenet group, soc.genealogy.computing (google.com), has written about a project that they are currently working entitled Forays into genealogy data modelling I and II :
I have written a couple of articles about the migration of my data from a TMG database to a full-fledged SQL RDBMS. The project is still in progress, and I’ll probably continue to write about this stuff on my homesite as long as I’m working on it. Don’t hold your breath for a finished application, though, unless someone with guts are stepping in to do all the coding for me 🙂
TMG = The Master Genealogist
Part I, The TMG portion is located here: solumslekt.org/forays/tmg.php
Part II, “Into the Blue”, is located here: solumslekt.org/forays/blue.php