Same database not "communicating" among courses

I have a number of Italian, Spanish, Portuguese etc courses, 5 or 6 for Italian for ex. I’ve called the database “Niahm (Italienisch)” in each and every case. However, I never get to see an item from the database, if I am not editing the specific course in which that specific item appears. What is then the point in having names for databases, if the system does not present you with the whole database, regardless of course? When introducing native audio, this lack of a fundamental feature is terribly annoying…