Check the DSS glossary . In database management systems, data files are the files that store the database information, whereas other files, such as index files and data dictionaries, store administrative information, known as metadata. Systems refers to a combination of components working together. For example, a computer system includes both hardware and software. An information system is a set of interrelated hardware and software components that collect, process, store, and disseminate information to support decision making, control, analysis, and transaction processing in an organization.
Information technology refers to computing and telecommunications hardware and software.
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