Decision support systems have experienced a marked increase in attention and importance over the past 25 years. This is the second in a two-volume work that presents a survey of the decision support system (DSS) field. Written by well-known scholars and practitioners from the DDS community, it covers both developed territory and emergent frontiers. It will give the reader a clear understanding of fundamental DSS concepts, methods, technologies, trends, and issues. It will serve as a basic reference work for DSS research, practice, and instruction.