Answers to the Exercises
This appendix provides answers and solutions to the chapter-ending exercises presented earlier in this book. In some cases, we have presented multiple (alternative) solutions for a single exercise. Sometimes you will see warnings for possible incorrect solutions, in case of known pitfalls.
Of course, it is impossible to list all correct solutions for each exercise; the SQL language is too rich (or redundant?) for such an attempt. This implies that it is perfectly possible for you to approach and solve certain exercises in a completely different way. In that case, you can compare your results with the results ...