Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very Good Book and Clear Concepts. Worth buying it for Refer

I find this book very informative and worth buying for your regular usage&reference. Though it did not cover advanced topics and give more examples in general but the flow of this book is very good and easy to understand. I strongly recommend this book for the people who want to know more about the details of Oracle9i Architecture&Administration.