: PREFACE This is the First Edition of a Simplified Course in computer science for Class XI and XII in your hands. Since the CBSE syllabus for computer science has many changes, this edition is the outcome for the same. This book is aimed at providing a thorough base and understanding in various latest trends in Information Technology. This book covers Python 3.x, the world class professional programming language. Class, Inheritance, Overloading, Boolean algebra, SQL, Python with SQL and Concept of Network. The first edition of this book lays the foundation for further studies by covering the aspects in elaborative yet simple language. The book has been divided in five Units. Unit I - Beginners of Python (Chapter 1-4) discuss various major and important terms in programming of Python such as, Data types, Function (UDF and Built-in) and statement controls(if, while, for etc.). Unit II - Together with Python (Chapter 5 - 7) introduces different terms of Python like, Array and List, Tuple and it Method, and Dictionary and it Methods. Unit III - OOPs with Python (chapter 8 - 14) covers various terms such as Class, Inheritance, Overloading, Multithreading and Exception Handling in details. It also discussed how OOPs are implemented in Python. Unit IV - Data Structure (Chapter 15- 16) introduces various data structure, their purposes and functions along with their implementation in Python. It provides details information about Stack, Queue, and Boolean algebra. Unit V - Programming with SQL in Python (Chapter 17 - 22) covers various file handling method. Different file operation, Database management system terms, programming with SQL, implement SQL in Python for development of back end program. We have worked our best to keep the presentation of this book short, simple, and catchy. Our goal is that by the end of each chapter, you feel confident about the contents and enjoy yourself doing so. Any suggestion for improvement of this book is welcome. Author and Publisher
