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it essential ch 10 (1)
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it essential ch 10 (1)
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it essential ch 10Information system - ANS-Collection of hardware, software, people, data, and procedures that
work together to provide information essential to
tps, mis, dss, ess
Computer-Based Information Systems - ANS-Almost all organizations have computer-based
information systems. Large organizations typically have formal names for the systems designed
to collect and use the data. Although different organizations may use different names, the most
common names are transaction processing, management information, decision support, and
executive support systems.
Transaction processing system: - ANS-records day-to-day transactions, such as customer
orders, bills, inventory levels, and production output. The TPS helps supervisors by generating
databases that act as the foundation for the other information systems.
Record day to day transactions to support supervisors
Management information system (MIS): - ANS-summarizes the detailed data of the transaction
processing system in standard reports for middle-level managers. Such reports might include
weekly sales and production schedules.
1. periodic reports
2. exception reports
3.demand reports
Use data from TPS to support middle managers
Decision support system: - ANS-provides a flexible tool for analysis. The DSS helps middle-level
managers and others in the organization analyze a wide range of problems(internal and
external) , such as the effect of events and trends outside the organization. Like the MIS, the
DSS draws on the detailed data of the transaction processing system.
1. strategic models
2.tactical models
3.operational models
Use data from TPS and analytical tools to support middle managers
provides a flexible tool for analysis of a wide range of problems, such as the effects of events
and trends that may occur outside of the organization.
Executive support system (ESS)/executive information system (EIS) - ANS-is an easy-to-use
system that presents information in a very highly summarized form. It helps top-level managers
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