PAULRAJ PONNIAH, PHD, an Adjunct Professor, teaches college courses in database design and data warehousing. He has over twenty-five years of experience as an information technology consultant, and has worked for such organizations as Texaco, Sotheby's, North American Philips, Blue Cross/Blue Shield of New York, Columbia-Presbyterian Medical Center, International Flavors & Fragrances, and Panasonic. Dr. Ponniah has published two successful books and continues to lecture to information technology professionals on data modeling, database design, and data warehousing.