Business Process Modeling and Analysis – Simply Put! Using Dataflow Diagrams and Swimlane Diagrams Identifies Functional and Non-Functional Requirements. Business processes are what organizations do. Whether documented or not, whether designed or not, whether understood or not, nothing gets done until someone (or the system) does it. That is what business processes are all about. They are a combination of business operating procedures, business rules, business data, and supporting . . .