This book deals with Object Oriented Programming (OOP). We have used Powerbuilder 10.0 (PB 10) as the programming language. There is a vast amount of literature that deals with the topics covered in this book. However it takes a long time to get the all the bits and pieces together, especially if you are relatively new to the world of OOP. Due to this reason, the staff at RDS cc were motivated to compile this book. We believe Powerbook will bring those many bits and pieces together quickly and efficiently, saving you time and money. Powerbook is suitable for novices (who have a basic knowledge of general programming concepts) as well intermediate level programmers. Powerbook provides a quick learning curve to OOP and Powerbuilder development.