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Information system
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Information system

The term information system has the following meanings:

1. A system, whether automated or manual, that comprises people, machines, and/or methods organized to collect, process, transmit, and disseminate data that represent user information.

2. Any telecommunications and/or computer related equipment or interconnected system or subsystems of equipment that is used in the acquisition, storage, manipulation, management, movement, control, display, switching, interchange, transmission, or reception of voice and/or data, and includes software, firmware, and hardware

Source: from Federal Standard 1037C and from MIL-STD-188 and from the National Information Systems Security Glossary

The simplest model that describes the Structure and Behaviour of an Information System takes five objects:

For Structure:

For Behaviour: Source: Vicente Aceituno

3. In the mathematical area of domain theory, a Scott information system (after its inventor Dana Scott) is a mathematical structure that provides an alternative representation of Scott domains and, as a special case, algebraic lattices.