This book has been written by giving enormous simple examples of each feature so it is easily understandable for new developers, there are many advance features that most of the conventional books ignore so it is equally beneficial to the experts. There are more than 400 practical examples, which are being given by the author by keeping in mind the practical problems he himself faced. This book is very useful for the person, who wants to work as an oracle developer, working developer who wants to extend his knowledge and professional or student who intend to give OCP exam.