The Workshop provides quiz questions to help you solidify your understanding of the material covered and exercises to provide you with experience in using what you've learned. Try to answer the quiz and exercise questions before checking the answers in Appendix A, "Answers to Quizzes and Exercises," and make sure you understand the answers before continuing to the next lesson.
Note
In all these exercises, I'll ask you to find some fact or set of facts. I'll pose a problem, and then I'll provide you with the answer. If your results match mine, you probably found a correct method of resolving the query. In the answers, you'll see my SQL solution.