There are a lot of comments, and questions out there about the Data Vault model, particularly from those who claim to know it and understand it. Yet some of them have a) not engaged me, nor b) gone to take the certification class. Reasons for the DV model are buried in the methodology – a lot of benefits come from using both the data modeling techniques and the methodology. That’s for another post. In this post I will try to focus JUST on the physical table structures, similarities and differences, so that the physical nature of the structures can be “compared” (so to speak).
Short discussion on business keys, and what to do when you can’t find the right one for the hub’s purposes.