Overviews programming and business programming concepts and the development of the RPG language, covering principles of top-down design, interactive programming, data definition, and inter-program communications. Chapters contain questions, exercises, and programming assignments. Appendices cover AS/400 features, SEU, and debugging programs. This second edition includes a new appendix that correlates the key concepts from each chapter with their RPG IV counterparts. Annotation copyright Book News, Inc. Portland, Or.