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Information Systems by Mind Map: Information Systems
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Information Systems

Expert System

The computer analyzes the data and then actually makes a decision.

Focuses on answering questions from a particular field or domain.

Information in an expert system is gathered from experts and then put into a knowledge base.

It can use fuzzy logic to indicate how sure it is of a decision.

An expert system work by a series of rules.

If the system does not have any rules, it can learn on its own with a neural network.

Decision Support System

Helps make decisions by manipulating, analyzing, projecting, and modeling data.

Does not make the decision.

Can make decision models, numeric representations of real situations.

Can read queries from managers on what information they need to solve a problem.

Requires one to have a extensive knowledge of an area.

Management Information System

Creates reports for managers to base their decisions on.

MIS can display information in different ways.

Can generate scheduled reports as well as ad-hoc, reports base on certain abnormal criteria.

Summary reports can summarize a known set of data.

Exception reports can present data outside acceptable ranges.

Transaction Processing System

Manges exchange between two parties

Multiple transactions at a time

Stores in databases

Generates regular reports

Old versions used batch processing

Newer versions use online processing.

Executive Information System

Helps mangers plan budgets, policies, and other high level decisions.