This book uses one of the standard OpenEdge sample databases for its examples, the Sports2000 database. This is a simplified example of a database that might be used in a typical order entry application, with customers, orders, order lines, and other information for keeping track of customers and their orders. Some of the same example procedures and windows you will build are used and extended throughout the book as you are introduced to new programming concepts, but you will not be building a complete sample application. This is largely because, in the course of introducing so many separate language constructs and programming techniques, the book gives you more of a one-of-each experience that would not be typical of a standardized application. Once you've worked through the book, you will be able to use what you learn to build many kinds of comprehensive applications.
