Database technology is a cheaper solution for industry based software since it is too expensive to hire people to do certain jobs such as sorting and indexing files. The first database system was built upon the SQL standard in 1980s from Oracle. Relational databases became more popular from 1980s. This book aims at clarifying and explaining the fundamental concepts of designing and implementing databases, which is helpful throughout the life time as a student and professional. Extensive exercises and numerous case studies are provided at the end of each chapter, which helps to develop the skills of database application design and implementation. Without normalization database is of no use. This book clears the concept and enhance the ability of designing normalized database.