dataflowdataflow-diagram

Is there a way around data flow diagrams rules?

Can data come out of a data store and then be processed and then go to an external entity?

the image shows that cold water going to reservoir and then to the heater through U-shaped tubes and then to sprinkler and into container which would process coffee beans and hot water and pour into jug

My question is that is it ok that data (coffee and hot water) are coming out of a data store (container) and then are processed into coffee and then poured into an external entity which is the jig? Is this dfd obeying dfd rules?

Solution

    1. DFDs can never contain user as an entity, rather you should represent some functionalities through which the data flows eg. login, authentication etc

    2. Your data here seems correct , you can just optimize the parallel flows using joins and forks