Sams Teach Yourself SQL in 21 Days

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.