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Review Questions

27 August, 2015 - 13:02
Available under Creative Commons-ShareAlike 4.0 International License.
  1. Why do we need to document an Information System?
  2. What is a physical data flow diagram (DFD)?
  3. What is a logical data flow diagram (DFD)?
  4. Describe the symbols used in constructing data flow diagrams.
  5. What is the difference between a context diagram, a logical DFD, and a physical DFD?
  6. What is a systems flowchart?
  7. What are the similarities and differences between a systems flowchart and a DFD?
  8. Distinguish the aspects of systems depicted by DFDs from those depicted by E-R diagrams.
  9. What is an E-R diagram?
  10. Describe the symbols used in constructing E-R diagrams.
  11. What is a table of entities and activities?
  12. Which entities in a narrative are included in the context diagram as internal and which are shown as external?
  13. When do we have a choice as to what will be included in a context diagram?
  14. Which activities can be included in the logical processes on a logical DFD?
  15. What are the guidelines for grouping logical activities for a logical DFD?
  16. Where are error and exception routines shown on DFDs?
  17. Where are error and exception routines shown on systems flowcharts?
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