While chapters 1-5 did a good job of introducing the reader to the concept of database modeling and design the remaining 8 chapters were too tightly coupled to specific implementations. This is a book I'd suggest to a junior who's comfortable enough with whatever aspect of programming is their focus but they want to learn about relational databases too. Anyone other than that isn't going to get a whole lot of value out of this book outside of the core first five chapters.
At the end of the day if you're junior and see this at a used book store a few bucks its a decent buy. Just note that chapters 1-5 are the meat, and choose either chapters 6-7 or 10-11 to learn the application. Normally I'd say read a textbook cover-to-cover but chapters 6-7, 8-9, and 10-11 are so redundant you might as well skip 2 of those sets unless you're really struggling with relational DBs and/or SQL. Then find another book on 'data modeling' if you're hooked and want to go deeper.