Dr. Pat Selinger is a world-renowned pioneer in relational database management and inventor of the technique of cost-based query optimization that has been adopted by nearly all relational database vendors and is now taught in virtually every university database course. She was a key member of the original System R team that created the first relational database research prototype. She established and led IBM's Database Technology Institute, considered one of the most successful examples of a fast technology pipeline from research to development and personally has technical contributions in the areas of database optimization, data parallelism, distributed data, and unstructured data management. Dr. Selinger, now retired and consulting at IBM, was appointed an IBM Fellow in 1994. Prior to her retirement she held the position of IBM Vice President of Information Management Architecture and Technology. She is an ACM Fellow, a member of the National Academy of Engineering, and a Fellow of the American Academy of Arts and Sciences. Dr. Selinger has published more than 40 refereed papers, has received the ACM Systems Software Award for her work on System R and has received the SIGMOD Innovation Award, the highest ACM award given in the area of data management. She is now a project consultant for IBM.