Title: Not a good book - poorly written
Product review: This book pretends to teach advanced OO and design patterns and falls woefully short. The authors don't have any grasp over the fundamentals of OO. Don't waste your money on it. This book isn't worth the paper it is printed on. There are better books on powerbuilder. If you want OO or design patterns pick up the books by Booch or Gamma et al.
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