Data Flow Diagrams
This class explores Data Flow Diagrams (DFD) as tools to document the flow of information within an organization. The context level DFD and the first level detailed DFD will be explored.
Intro to DFDs.pdf
Download
Video lecture on how to draw a DFD. Link
This link shows the student's rationale when drawing the DFD for a University registration system. Link
DFD Presentation. Link
Data Flow Diagram examples. Link
DFD Task
Attempt your own DFD. Remember the Context level DFD models the entire system. The level 0 or 1 DFD is detailed. It must include:
- All the Entities from the context level
- All data stores from the context level
- all data flows from the context level
- Then you add the additional detail required.
Here is the link to the exercise. Attempt it first then move down in the document online for the suggested answer.