Arie D. Jones

Arie D. Jones, Senior SQL Server DBA and analyst for Perpetual Technologies, Inc. (PTI), is author of several books and articles pertaining to database-related topics.

Ron Plew

Ryan K. Stephens is president and CEO of Perpetual Technologies, Inc., an information technology consulting and training firm in Indianapolis, Indiana. He has specialized in Oracle databases and SQL for more than 10 years, working as an Oracle programmer/analyst and Oracle database administrator. Ryan is a Certified Oracle Professional and is also an adjunct professor at Indiana University-Purdue University in Indianapolis, where he teaches SQL, PL/SQL, UNIX, Oracle Designer, Oracle Forms, and Oracle database administration. Ryan resides in Indianapolis with his wife Tina and their children Daniel, Autumn, and Baby Stephens.

Ronald R. Plew is vice president and CIO for Perpetual Technologies, Inc. in Indianapolis, Indiana. Ron is a Certified Oracle Professional, and his duties include Oracle database consulting and training. Ron is an adjunct professor at Indiana University-Purdue University in Indianapolis, where he teaches SQL and various database courses. He holds a Bachelor of Science degree in business management/administration from Indiana Institute of Technology in Fort Wayne, Indiana. Ron also serves in the Indiana Army National Guard, where he is the programmer/analyst for the 433rd Personnel Detachment. Ron's hobbies include golf, chess, and collecting Indianapolis 500 racing memorabilia. He shares ownership of Plew's Indy 500 Museum with his brothers, Mark and Dennis; his sister, Arleen; and mother, Betty. Ron lives in Indianapolis with his wife Linda. Ron and Linda have 4 children and 10 grandchildren.

Ryan Stephens

Ryan Stephens is an entrepreneur who has built his career and multiple IT companies around SQL, data, and relational databases. He has shared his knowledge and experience with organizations, students, and IT professionals all over the world. Two of the companies he has co-founded, Perpetual Technologies, Inc. (PTI), and Indy Data Partners, have provided expert database and IT services to large-scale government and commercial clients for more than 25 years. Ryan has authored several books for Pearson; some of his books have been translated and published internationally. Additionally, Ryan has worked for large organizations and has consulted within the areas of SQL, database design, database management, and project management. He designed and taught a database management program for Indiana University-Purdue University in Indianapolis and currently teaches online SQL and database classes for Pearson Education.