Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: I feel dumber now...

This book is required for my database class; I wish it weren't. The sentence structure is absolutely atrocious. Whatever happened to publishers checking for complete sentences??? Because of the poor sentences, I loose focus and do other things (like write this review).Surprisingly, this is not the most frustrating part of the book. Why do I need flip hundreds of pages backward to learn a topic or do a problem? The authors rely on you spending more time flipping the pages of their book than actually reading it (this may be intentional since the writing itself is poor).If you don't have to get this book I wouldn't. Otherwise I feel sorry for you and wish you keep your sanity...