Relatedly, I've worked with systems that would maintain a "deleted" or "archived" table for every normal table, with an identical schema. I nowadays prefer it

Relatedly, I've worked with systems that would maintain a "deleted" or "archived" table for every normal table, with an identical schema. I nowadays prefer it over a deleted_at field for many of the same reasons as the article. I also nowadays don't care much for created_at or updated_at; IMO it's preferable to maintain an actual transaction log (which is something I'd add to the YPGNI list, given how invaluable that tends to be for auditing purposes).