Robert Stackowiak has worked for 20 years in IT industry related roles that have included software development, management of software development, systems engineering, sales and sales consulting, and business development. He currently is recognized worldwide as a field sales expert in data warehousing at Oracle, and previously was well recognized for his work at IBM's RISC System/6000 Division, Harris Computer Systems, and the U.S. Army Corps of Engineers. Bob has spoken at numerous computer related conferences and has conducted briefings with companies based around the world. His papers regarding data warehousing and computer and software technology have appeared in publications such as The Data Warehousing Institute's Journal of Data Warehousing, Informix Tech Notes, and AIXcellence Magazine.Donald Bales is a Computer Applications Consultant specializing in the analysis, design, and programming of distributed systems; systems integration; and data warehousing. Don has over sixteen years experience with Oracle as both a developer and a database administrator, and six years experiance with Java. He is currently working on the migration of medical and industrial hygiene systems to a web environment for a major Oil company. When he is not developing applications, Donald can often be found working with horses, playing the piano, or playing the bagpipes. Donald has had several careers, and has at various times been a mechanic, a general contractor, Mr. Mom, a developer, and currently a consultant. He has a bachelor of science degree in Business from Elmhurst College in Elmhurst, Illinois. Don currently resides in Downers Grove, Illinois with his wife Diane and his daughter Kristyn. Rick Greenwald has been active in the world of computer software for nearly two decades, including stints with Data General, Cognos, and Gupta. He is currently an analyst with Oracle Corporation. He has been a principal author of ten books and countless articles on a variety of technical topics, and has spoken at conferences and training sessions across six continents. In addition to Oracle in a Nutshell, Rick's books include Oracle Essentials: Oracle9i, Oracle8i, and Oracle8 (principal author with Robert Stackowiak and Jonathan Stern, O'Reilly & Associates, 2001), Oracle Power Objects Developer's Guide (principal author with Kasu Sista and Richard Finklestein, Oracle Press, 1995); Mastering Oracle Power Objects (principal author with Robert Hoskins, O'Reilly & Associates, 1996); Using Oracle Web Server (principal author with many others, Que Publishing, 1997); The Oracle WebDB Bible (principal author with Jim Milbery, IDG Books Worldwide, 1999); and Administering Exchange Server (principal author with Walter Glenn, Microsoft Press, 1999).