System Concepts Flashcards
What is the purpose of an information System?
helps collect, organize, and analyze that data.
Turn raw data into useful information that can be used for decision-making in an organization.
Typical components of Information systems
Hardware Software - Systems and Application Databases Network Procedures
Types of Information systems
- Transaction Processing
- Management information
- Decision Support
- Executive Information
What is transaction processing
perational-level systems at the bottom of the pyramid. They are usually operated directly by front-line staff, who provide the key data required to support the management of operations. This data is usually obtained through the automated or semi-automated tracking of low-level activities and basic transactions.
What is management information?
management-level systems that are used by middle managers to help ensure the smooth running of the organization in the short to medium term.
Highly Structured
helps evaluate organizations performance
Built upon transaction processing system
What is /Decision Support
knowledge-based system used by senior managers to facilitate the creation of knowledge and allow its integration into the organization.
Analyze existing structured information,
helps project the potential effects of decisions into the future.
usually interactive and are used to solve ill-structured problems.
support the exchange of information within the organization.
What is an Executive information system?
strategic-level information systems found at the top of the pyramid.
help analyze the environment in which the organization operates, identify long-term trends, and plan appropriate courses of action.
Often weakly structured and comes from both internal and external sources.
designed to be operated directly by executives without the need for intermediaries and may be easily tailored to the preferences of the individual using them.
highly customized
What are the options available for System conversion
Run the new system parallel to the old system
Phase in the new system
Use one site as a pilot site
Direct changeover
