you can view the link here http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=274811&SiteID=1&mode=1
I think this is the longest forum post I have ever written (and no I didn't proof read or spell check it :) )
I am curious what other's takes are on this.
Am I nuts for recommending a series of 1-1 extension tables or table based inheritance?
Are my risk assessments wrong with the amount of work associated with maintaining the validation and invariants for the dynamic attributes?
Can you think of other good ways of handling this situation?