It's important to note that the author uses denormalized tables for data analysis only. It was never outright stated "don't do this for source-of-truth, authori

It's important to note that the author uses denormalized tables for data analysis only. It was never outright stated "don't do this for source-of-truth, authoritative data," but yeah, don't do this for source-of-truth, authoritative data (in general).