Considering a hypothetical situation, in which a user makes a request to admin for a change in his profile which only admin can edit.
After processing the request, in either case, acceptance as well as denial. what's more good of a practice. To keep it in DB with a status tag, that says whats happened to the request. Or informing the user about is through mail or something and delete the request.
exp. developers of the community please share your wisdom to this young apprentice.