About the Authors Candace Leiden is the Chief Technologist at the Cardinal Software Group, a training and consulting corporation. Forced to learn about computers because she was afraid of slide rules, Candace has worked as a software developer, a system and network administrator, and a database administrator and architect. She currently specializes in performance management and tuning for large production databases on a variety of Linux, UNIX, and Windows 2000 systems. Candace is also the author of TCP/IP For Dummies, published by Hungry Minds, Inc., and of more than 20 technical courseware manuals for large international corporations, the United Nations, and the U.S. Department of Defense on Linux, UNIX, and Oracle. She also speaks at technical conferences worldwide. Terry Collings has been working in the computer field since 1981 and has experience in MS-DOS, Windows, Netware, and UNIX, as well as the hardware on which these systems run. He is an Instructional Technologist at Muhlenberg College in Allentown, Pennsylvania. He also teaches a wide range of computer and technology related courses in the evenings at Allentown Business School.