I have a question related to aggregation and association. Each movie has one director, and each play has one main actor. The relationship is definitely association... But I think aggregation should be used. I was reading about the relationships and found the pond and duck example. This example made me feel that director, or main character are a part of movie/play. My friend claims this isn't example of it. May someone please explain, because I am confused... Thank you kindly in advance.
As explained, I was reading more on aggregation and association. I found example of pond and duck that had aggregation used, as an example of: if you destroy pond as a container, ducks live on. Isn't the same with the movie and director, play and main actor?
