Guys, I've done my homework: read the whole UML Distilled book by Fowler and through the UML specification. I understand the difference between Aggregation and Composition, but I know that many programmers don't. In a profeesional environment I probably wouldn't use those concepts in a diagram, because this would certainly motivate endless philosophical discussions regarding their meanings. I would instead use only associations and multiplicities to make things as clear as possible.
Though, here we are trying to earn the SCEA title, and this is my question: in the realm of the certification, Aggregation/Composition should be used? Must be used? Has anyone ever submitted an assignment without them and passed with a good grade?
Your comments are much appreciated.