This book's usefulness is marred by the erroneous and incomplete database script for the sample site. Looks like authors did not test the source code they have provided for readers to download.I am really disappointed. I had purchased the book because of the case study approach but without a working database I am unable to implement/modify/build upon some of the good techiniques authors discuss in the book.If any of the authors read this review please post the corrected database scripts plus script to load sample data.