Many major companies are built entirely around information systems. Information systems is a discipline of study that is generally situated in business schools The essential objective of the discipline is to develop and study the theories, methods, and systems of using information technology to operate and manage organizations and to support their marketplace offerings. The five components of information systems are computer hardware, computer software, telecommunications, databases and data warehouses, and human resources and procedures Each of these is discussed in detail. The main components of information systems are computer hardware and software, telecommunications, databases and data warehouses, human resources, and procedures.
Computer software falls into two broad classes System software and application software The principal system software is the operating system. A large category of information systems comprises those designed to support the management of an organization. Three general categories of information systems support such knowledge work Professional support systems, collaboration systems, and knowledge management systems.
Information systems are a major corporate asset, with respect both to the benefits they provide and to their high costs.
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