Characteristics of Information Systems

•         Decision Support Systems assist people to make decisions by providing information,models and analysis tools. A DSS can be usedon a daily basis or when an organisation has toreact to the unexpected or make changes.Eg: Analysis of stockmarket, buying andselling shares.Modelling of variables effecting decisions.Uses what if analogies.

•         Expert Systems

provide information and solve problems that would otherwise require a person experienced in that field Diagnosing,monitoring, selecting, designing, predictingand training. Captures a set of knowledge thatis often difficult to transfer by a series of questions.

•The expert parent: Do you want to go outtonight

•Have you cleaned your room?

•Have you done your homework?

•Are sensible people going?

•Have you got a way to get home?

•Are the persons parents going?

•Combining expertise from multiple experts The friend expert:

•Do you look good?

•Can you convince your parents that you’re allowed to go? Diagnosis of disease Problems in production

•         Management Information Systems

Provides basic information for an organisations managers. An MIS presents basic facts about the performance of an organisation. Some common examples of MIS output are reports on sales, stock, inventory, payroll