Barbara A. Eckman IBM Software Group, 1475 Phoenixville Pike, West Chester, Pennsylvania 19380 (baeckmanus.ibm.com). Dr. Eckman, a Senior Technical Staff Member in Healthcare and Life Sciences Solutions, joined IBM in 2001 with ten years' experience in bioinformatics research at a Human Genome Project Center and two major pharmaceutical companies. Her current research interests include optimizing scientific workflows using mediator technology, advanced technologies for healthcare interoperability, and extending DBMS technology to address questions in life sciences and clinical research. Dr. Eckman holds a Ph.D. degree from the University of Pennsylvania.

Paul G. Brown IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (pbrown1us.ibm.com). Mr. Brown is a Senior Technical Staff Member in the Advanced Databases Research Group. His research interests include scalable systems for data analysis, improving DBMS engine performance, and developing advanced RDBMS extensions. Mr. Brown previously worked at the University of California at Berkeley, Illustra, and INFORMIX.