Where does the ampersand come from

Plus and where does it come from? Where does the ampersand come from command prompt to something more useful? Can one prevent users from executing devious commands?

It can be used interactively or driven from scripts. UFI was included in the first Oracle releases up to Oracle 4. The UFI interface was extremely primitive and, in today’s terms, anything but user friendly. If a statement was entered incorrectly, UFI issued an error and rolled back the entire transaction.