Decision Support System (DSS)
A DSS or Decision support system is a computer system based information system which supports organizational or business decision making tasks. Decision support systems serves the operation, management and the planning levels of the organization or business and help aid them to take the right decision that might be quickly changing and not simply mentioned or specified in advance. Decision support systems have the knowledge-based systems. The perfectly designed decision support systems is the interactive software or computer based system designed to help managers or decision makers accumulate useful information from the combination of documents, raw data, business models or personal knowledge in order to identify and solve problems and make decisions.
The concept of decision support system (DSS) can he traced back to 1940s to 1950’s with the emergence of operations research, behavioral and scientific theories of management and statistical process control, much before the general availability of computers. During these Jaw the basic objective was to collect business operational data and convert into a form that is useful to analyze and modify the behavior of the business in an intelligent manner. In the late 1960s and early 1970s, researchers at Harvard and Massachusetts institute of Technology (MIT), USA, introduced the use of computers in the decision making process. The computing systems to help in decision-making process were known .is management decision system (MDS) or management information systems (MIS), Later on, it was most commonly known as decision support system DSS. The term management decision system (MDS) was introduced by Scott-Morton in the early 1970s.
During the 1970s, several query languages were developed and numbers of custom-built decision support systems were built around such languages. These custom-built DSS were implemented using report generators such as RPG or data retrieval products such as focus, datatrieve and NOMAD. The data were stored in simple flat files until the early 1908s when relational databases began to be used for decision support purposes.