Not all unit coordinators upload their exams to the past exams database.
Sometimes the lecturer will upload practice questions or past exams on Blackboard closer to exam date.
Others give you a run down of topics to be covered on the exam either throughout the semester or during revision lectures.
Sometimes (if you're really unlucky), you get nothing at all to go by, except by paying attention in lectures to what the lecturer seems to emphasise - they put whatever they think is most important on the exam.
If Kathy's still lecturing ECC1000 and you've been attending lectures, you should pretty much know everything that's gonna be on the exam by the end of semester... she gets carried away in her hint-giving.
If John Gerrand is still unit coordinator for AFC1000, then there's probably gonna be a corporate governance theory Q on there...
Neither have a new unit code.
However, AFC1000 is a relatively new unit... I was in the first AFC1000 cohort in Sem1 2009.