During the division of the data flow map, it will be subject to the split (ie, processing) to subdivision, I found that it will often encounter such problems when subdivision: subdivided data flow map similar procedure flow chart. The flow chart of the data flow map should be the biggest taboo painted in data circulation, which is equal to where there is a problem.
After observation, I found that the processing of such a phenomenon usually has the following characteristics: there is only a successful relationship between several sub-functions implemented by the machining, and there is no sub-function output is another sub-function input, and then This relationship is the key to each other between the data flow maps.
Solution to explore
Can I consider such a resolution: If a processed, several sub-functions that have been included in the process are only in the execution time, the data flow diagram of the machining is divided into this processing. When the architecture design, the data flow map is imaged as a module structure diagram, and then divided into modules that perform each function according to the above sub-function.
