Jack E. Olson, chief technology officer for Evoke Software, has had a long career in developing commercial software. Olson has worked in a variety of software development areas,but he has concentrated on data management system technology and data management tools. At Evoke, he created the concept of data profiling and has evolved concepts for building understanding of databases at the content, structure and quality levels. Olson's new book, Data Quality: The Accuracy Dimension, (Morgan Kaufman, ISBN: 155860891) is available for purchase at http://www.amazon.com. You can contact him at Jolson@evokesoft.com.