You are to submit TWO DFDs this week. The context diagram and the level 0 diagram (next level up).
The context diagram ONLY depicts the system in the middle, with inputs on the left and outputs on the right.
The Level 0 diagram shows the data stores (data bases) in the center of the diagram, processes (numbered as shown in the text) , and the entities outside of the processes. Arrows are drawn to show how data is moving from the entities, to the processes, and into the data stores. There needs to be text on the lines of the arrows describing what information is moving.
I have attached the example of what they should look like. Please updated the Decision Support System document with the data flow diagrams.