? This is how Postgres stores data, as documents, on the local filesystem:
Those are not documents for a definition of document that works with the rest of your comment. If by document you mean “any kind of data structure”, then yes, those are documents. But then the term becomes meaningless, as literally anything is a document.
Yep… it’s pretty easy to write a query on a moderately large database that returns 1kb of data and takes five minutes to execute. You won’t have that issue if your 1kb is a simple file on disk. It’ll read in a millisecond.
Sure, but then finding that document takes 5 minutes because you need to read a few million files first.