Fundamentals of Database Systems has become the world-wide leading textbook because it combines clear explanations of theory and design, broad coverage of models and real systems, and excellent examples with up-to-date introductions and modern database technologies. This book has been revised and updated to reflect the latest trends in technological and application development. This fourth edition expands on many of the most popular database topics, including SQL, security, and data mining along with an introduction to UML modeling and an entirely new chapter on XML and Internet databases.