Author Steve O'Hearn discusses his book, "OCA Oracle Database SQL Certified Expert Exam Guide".
Steve O'Hearn has been an Oracle Certified Application
Developer since 1999. He has designed databases for 23 years for clients
such as the U.S. Army, U.S. Navy, the FAA, the World Bank, NASA, and
others. He has served as a Chief Technology Officer, a consultant, and
Instructor, and is the author of several computer books, including the "Oracle OCP Developer PL/SQL Program Units Exam Guide" and "OCA Oracle Database SQL Certified Expert Exam Guide" from Oracle
Press.