DFD diagram to SC Diagram

Example:

(1) There is a DFD diagram below, where the interval between the vertical dotted line input, transformation, and output, Please convert it into a SC diagram:

Solution: we can see from the figure that the left side of the first vertical dotted line is the input part, the center is the transformation part, and the edge is the output part. As a result, we can know that the level-1 SC diagram has four modules apart from the main module, namely the input module, output module, and transformation module. For the input module, we obtain the D obtained after C, B and then transformation. For the conversion module, we convert d to I and D to H, the output module can output I and h respectively. I will not elaborate on the following. You can refer to the SC diagram below.

(2) The following DFD diagram is displayed. The vertical dotted line indicates the interval between input, transform, and output. The transformed part is a transactional data flow diagram. Convert DFD to SC diagram.

Haha ...... I believe that you will not feel very difficult when you see this graph after reading the example (1), but this graph is quite different from the DFD graph above. From the question, we can see that the above is a data flow diagram, and this is a transaction data flow diagram. In fact, in my opinion, the fundamental difference between the data type and the transaction type is that there is a transaction center that handles the data by situation; however, if the conversion type is none of your input, he will perform the same processing. As long as you understand the differences between transactional and transformation models, it is not difficult to draw pictures. The SC diagram is shown below ::

Let's show you how to draw this line with an arrow circle ...... In fact, I found it for a long time. I would like to share with you the following, and I hope there will be a better way to introduce it.

For a straight line, we need to find it in the commonly used toolbar (drawing tool button) --> click it to display a Drawing toolbar; find it here and I believe many people will start to draw it, but I would like to give you some advice, that is, to agree to draw from the top down. This painting will look a little better when we describe the data stream information. For the line direction, you can convert it in the format toolbar (usually the last one) and click the downward triangle above it, then, select "more line endpoints". In the displayed dialog box, select the desired line type ..

 

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