IT Systems

Question 1

What are the four major tasks of information systems?

Answer 1

1. Input
2. Transformation
3. Output
4. Storage

Question 2

What are the three strategic roles of business information systems?

Answer 2

1. Support business processes and operations.
2. Support decision making.
3. Support managers in planning for the future.

Question 3

What are the three components of a decision support system?

Answer 3

1. Database - consists of the raw data that are relevant to the decision
2. Model - the set of equations, comparisons, graphs, conditions, etc. into which data will be fed.
3. Dialog - the user interface that allows the user to specify the appropriate model and the particular set of data to which the model should be applied.