re: Debunking Kimball Effective Dates

Hi Jamie,

I am not following this: "Kimball’s method cannot be constrained in a relational database management system (RDBMS) without a complicated and debilitating set-based check constraint".

The following approach does just that via a FK constraint:

http://sqlblog.com/blogs/alexander_kuznetsov/archive/2009/03/08/storing-intervals-of-time-with-no-overlaps.aspx

Am I missing something?