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 published seven 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). David C. Kreines is the Manager of Database Services for Rhodia, Inc., a subsidiary of Rhone-Poulenc S.A., and author of Oracle SQL: The Essential Reference (O'Reilly & Associates, 2000) and coauthor of Oracle Database Administration: The Essential Reference (with Brian Laskey) (O'Reilly & Associates, 1999) and Oracle Scripts (with Brian Lomasky) (O'Reilly & Associates, 1998). Dave has worked with Oracle as a developer and database administrator since 1985, on a wide variety of platforms, from PCs to mainframes. He is an Oracle Certified Professional, is certified as a DBA, and has been a frequent contributor to Oracle conferences, user groups, and publications, both in the United States and in Europe. Dave served two terms as president of the International Oracle Users Group -Americas (IOUG-A), and spent ten years on the board of directors.