Guy Harrison has worked with databases for more than a decade, has conducted many MySQL and Oracle training seminars, and is author of several books on Oracle, including "Oracle Desk Reference" (Prentice Hall PTR). Currently a product architect at Quest Software, Harrison has conducted many training seminars and has authored several articles for the Oracle Technical Journal. He resides in Australia.
Steven Feuerstein is considered one of the world's leading experts on the Oracle PL/SQL language. He is the author or coauthor of "Oracle PL/SQL Programming", "Oracle PL/SQL Best Practices", "Oracle PL/SQL Programming: Guide to Oracle8i Features", "Oracle PL/SQL Developer's Workbook", "Oracle Built-in Packages, Advanced Oracle PL/SQL Programming with Packages", and several pocket reference books (all from O'Reilly). Steven is a Senior Technology Advisor with Quest Software, has been developing software since 1980, and worked for Oracle Corporation from 1987 to 1992. He is currently designing and building Qnxo (www.qnxo.com), the world's first active mentoring software.