This text gives readers the information they need to create, manipulate and control relational database management systems (RDBMSs). Users of such systems will find the working knowledge of SQL that they'll gain from this book should enable them to do a better job of storing and retrieving data, no matter what kind of of application or hardware they are using. Readers also find out how to take advantage of SQL's assortment of tools and features from inside their programs. Understanding databases and SQL gives users power to access the information they need. It enables programmers to create more powerful applications.