How do management and knowledge systems support organizational decisions?

"Chief information officer (CIO): An executive with responsibility for managing all information resources in an organization. Decision support system (DSS): A management support system that helps managers make decisions using interactive computer models that describe real-world processes. Executive information system (EIS): A management support system that is customized for an individual executive; provides specific information for strategic decisions. Expert system: A management support system that gives managers advice similar to what they would get from a human consultant; it uses artificial intelligence to enable computers to reason and learn to solve problems in much the same way humans do. Knowledge management (KM): The process of researching, gathering, organizing, and sharing an organization’s collective knowledge to improve productivity, foster innovation, and gain competitive advantage. Knowledge worker: A worker who develops or uses knowledge, contributing to and benefiting from information used to perform planning, acquiring, searching, analyzing, organizing, storing, programming, producing, distributing, marketing, or selling functions. Management information system (MIS): The methods and equipment that provide information about all aspects of a firm’s operations. Management support system (MSS): An information system that uses the internal master database to"