Decision Support System (DSS) is one of the information systems useful for making decisions. It is an integrated
set of computer tool that allows a decision- maker to interact directly with computers to create information and is useful in
making decisions. This computer based system is useful in many areas for supporting decisions. DSS have been built for
approximately 40 years and it is useful in most of the sectors. This paper explores applications of DSS in different sectors
and its use. DSS is used in many fields like agriculture, medicine, business, education, railway etc. DSS provides easy
interface so that it is easy to use and we can take complicated decision using DSS. It is observed that most of the DSS
applications are used in medical sector for diagnosing different diseases. CDSS is commonly used DSS in medical sector for
clinical decisions