To clarify: The registry is a database for OS or application stuff (caches, settings, etc.). It's not meant to be user-editable and outside arcane trouble-shooting stuff you're unlikely to ever have to venture in there.
"Use the COMMENT statement to add a comment about a table, view, materialized view, or column into the data dictionary."
https://docs.oracle.com/cd/B19306_01/server.102/b14200/state...
https://www.postgresql.org/docs/current/static/sql-comment.h...
I think that's kind of a stretch since regedit has been a part of windows as long as I can remember.
... is exactly the reason to have useful comments in there.
