I was just wondering if we are going to have a debriefing session re: the exam. It would be nice to go over the questions and discuss them in class. I was also wondering if Prof. Gibson could post the answers online. I'd really be interested in taking a look at them.
I share in everyone's opinion that the exam was difficult - I envisioned it being totally different.
It got me thinking though... in real life, how often you come across an ER diagram in isolation with no background explanation attached (such as the examples on the exam)? I understand that ER diagrams allow you to visually map relationships and see cardinality, so in that sense I think that they're good. But I'd argue that their value is partially negated when you don't have any prior background knowledge about the actaul situation that they are attempting to depict. Although the diagrams in themselves are not ambiguous, the questions that we ask diagram to answer can sometimes produce ambiguous results.
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