One of the units on our course recommended this book, so like any good student I spent a small fortune and got a copy to my dissapointment!
My problem with this book is that it dwells on a couple of case studies in such a boring wordy way that finding truly useful facts becomes a chore. This book has also tried to be an all-in-one solution to the subject.
If your a student like me who doesn't have enough hours in the day to read all the recommended text thrown your way then I recommend you buy a couple of dedicated books for the same price, one covering just the UML and the other on requirements enginnering.