The questions that were most confusing were definitely the ER diagram questions. For the ER Diagram that was on the bottom of the page (the 2nd one we had to work on), you can come up with 2 different answers if you go different ways. For example, if I remember correctly, 'a department cannot exist without sections' is false because a department does not have to have courses. It is true if you look at it like 'a department must have professors, and professors must have sections'. I said the statement is true. Hope I'm right.
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