This book is primarily intended for use as a text in a database management course that approaches the subject as a business application. It can also be the basis for a short, intensive relational database design seminar. Features: * The first part of the text focuses on design of relational databases, from how systems work to maximising relational design. * Chapter 2 reviews the systems development cycle for students who have not recently studied systems analysis and design. * The second portion of the text focuses on data manipulation, including relational algebra, QBE, interactive SQL, and database integrity. * The final portion of the text presents the main issues of multiuser databases and data management. * Examples in the book involve two case studies: Small Bank, and Federated Taxi Company. Two additional case studies form the basis for end-of-chapter exercises. * End-of-chapter discussion questions and exercises encourage students to view concepts in different contexts and give practice in assessing user needs, formulating good relational designs, and creating effective queries.