The best book on the market for passing the IBM DB2 Certification Exams.
Good content and covers just about everything you need to know.
The sample questions could do with being somewhat different from those that can be found on the IBM web site.
The one flaw is in that it has never been proof read. I have all the errors documented so feel free to contact me if you wish to know. In addition to this some of the examples are wrong and could do with being tested before being placed in the book.
The quality and Quantity of information far outway the errors in the book and I would recommend it if you intend to get yourself certified.