Dear Bud: I have been going through the SQL chapter exercises and I am having some difficult with the chapter 4 questions. I was wondering how these chapter exercises relate to the exam because the exam is all multiple choice. I am not sure if concentrating on these exercises is most important. In addition, I was wondering if definitions are important, or just the implementation of the concepts. One further question, should we know how to use substitute ways to ask a query, or just understanding one way to ask the query is sufficient?
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