I wasn't invited back so I don't know. The back story is there had been some initial discussions before the meeting I attended. I was invited because my area is data analytics so the project owner wanted to keep me in the loop. It appears I upset the apple cart with my opinions. I was polite but firm. I don't regret it because I spend my life cleaning up messy data from systems not using core relational principles to get analytics out. Very few systems use foreign keys.