Mark A. Williams
Mark A. Williams is currently working as a production Oracle database administrator. He has been working with Oracle since database version 220.127.116.11, and holds Oracle Certified Professional certifications for versions 7, 8, 8i, and 9i. Prior to becoming a database administrator, Williams developed corporate software applications that used the Oracle database as a back-end. Over the years, he has worked as both an employee and an independent contractor on a variety of Oracle projects.