Is there a way around data flow diagrams rules?

Question

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

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?

Answer 1

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