Most businesses that flourished in this era requires some information systems are always developed by the managerial them. System information found in textbooks of the 1980s is a pyramid system that reflects the hierarchy of an organization, usually the processing system located at the bottom of the pyramid is always followed by a management information system, is the executive decision makers at the top to help them carry out their duties.
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| A four level pyramid model |
Some businesses that have information on this operating system using the pyramid method. Since it was first formulated some of the technologies and new categories were also developed from existing information systems. Some examples of types of information system are:
- Data warehouses
- Enterprise resource planning
- Enterprise systems
- Expert systems
- Geographic information system
- Global information system
- Office Automation
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