I must confess that I was skeptic before reading the book, because I thought that it could not add very much to Kimball's books. However, I was wrong: this turned out to be a very useful book. Not only it contains the most detailed explanation of DW aggregates available, but it also contains a very good discussion of the loading process for various types of dimensions and facts, which forms the bulk of data warehouse "back room processing".
One more final plus: the author completely adopts the Kimball approach to Data Warehousing, so this book fits very nicely with other books from Wiley's describing Kimball methodology.

Mr. Adamson is certainly the foremost expert in this area. He has many years of hands-on experience, research, and knowledge in Data Warehousing. I have been able to consult his books and find answers and solutions to problems that I encounter every day in my work. You shouldn't waste your time by not buying this book. Definitely don't waste your money by buying a book written by some else.