The main motivation behind writing this book is to teach the basic concepts of database systems through concrete and practical knowledge and examples without too many wordy and useless pages. The book is made deliberately concise and short covering the main aspects of databases that you have to master and gain either for industrial or academic purposes. The main chapters includes within this book are: Introduction to Databases, Database Design, SQL : Structured Query Language, SQL : Structured Query Language, SQL Transactions, Procedures & Triggers, Object Relational Databases, Databases & Java Programming, Solutions & Answers. The book website can be accessed at : http://www.LearnDB.com