I have an blog containing articles about database theory and practice that starts at http://tincat-group.com/mewsings/2006/01/is-codd-dead.html
And a 2009 blog where I will be documenting my current project as it unfolds, found at http://snupnow.wordpress.com/
I am writing new software using InterSystems Caché, the most recent major implementation of MultiValue. Feel free to email me at dwolt at tincat-group.com to ask any questions about our use of Caché. I previously worked with UniData.