I hope you'll be able to find this book: DB2 9 Fundamentals Certification Study Guide in actual bookstores... but if not, check out amazon.com. Today they put the book on sale with a 37% discount!
Today I received my copies of the book. They look amazing. The most unique thing about the book is the large number of sample questions. Each chapter has several study questions along with reasons why the correct answer is the right one. Each of these study questions are repeated in Appendix B... and take up 105 pages of the book. By far the most complete study guide for a DB2 exam that has ever been produced.
This book prepares you to pass the DB2 9 Fundamentals Exam (730). Roger is working on the second book in the series and has plans for a third book as well.