To Jim Gray (Microsoft Technical Fellow), who is deeply missed by the database world, which remembers him with fondness and respect for both his professional brilliance and his warm personal qualities. Jim Gray is responsible for several fundamental database technologies, especially in online transaction processing. Jim Gray is still missing after embarking on a solo one-day boating trip from San Francisco on January 28, 2007, to immerse his mother's ashes at sea. In 1997 Jim Gray received the A.M. Turing Award (which is considered by some to be the Nobel Prize for computer science) for his "seminal contributions to database and transaction processing research and technical leadership in system implementation." Jim Gray is the author of Transaction ...