If you are developing applications that access Oracle databases, you can save time and work by having SQL do more of the data handling for you -- this book shows you how. It teaches you how to create effective SQL queries to extract and update the data in an Oracle database. It teaches you how to design and implement a database, giving you insight into performance and security issues. It teaches you how to use PL/SQL to take advantage of powerful features like stored procedures, functions, and triggers. In short, it teaches you to create the kind of efficient database applications that make you a more effective and valuable developer.