In question 4 it says two associated classes cannot exist independently. But, how is that? For example, a pet dog and its owner are 2 classes that are associated. But they also do exist independently.
In question 3 it says when two classes are in aggregation relationship it has only one parent. But that is not true. A child class can have more than one parentreferred this link%20and%20Student%20(child).)
Please help. Thank you.