Ryan K. Stephens is president and CEO of Perpetual Technologies, Inc., a database company specializing in Oracle consulting and training. He teaches Oracle classes for Indiana University-Purdue University in Indianapolis, Department of Defense, and companies in the commercial sector. Mr. Stephens is a seasoned Oracle DBA, possessing more than 10 year's experience in Oracle database administration and development. He has written a number of books with Sams. Ronald R. Plew is vice president and CIO of Perpetual Technologies, Inc. Mr. Plew performs several duties including teaching Oracle for Indiana University-Purdue University in Indianapolis and providing Oracle DBA support and consulting for the Department of Defense. Mr. Plew is a member of the Indiana Army National Guard, where he is a programmer/analyst. He has been working with Oracle for more than 15 years in various capacities. He has written a number of books with Sams.