I really have not worked with databases a ton. But I do a think a huge thing I didn't address in the article is how readily are you even able to make changes?

I really have not worked with databases a ton. But I do a think a huge thing I didn't address in the article is how readily are you even able to make changes? I'm really talking about a system where you free to change things. Once stuff is exposed to the outside world you might relinquish your ability to keep factoring and factoring. Although that's a reason to only expose an API and not your actually object structure. I'm not sure how this all related to databases, but I suspect in many cases there you simply can't change existing things, too much would break. So yeah I think that's a different ball game to some degree.