There are two primary types of data flow diagrams, each with a specific function and designed to inform a different target audience. Logical data flow diagrams illustrate how data flows in a system, ...

A logical DFD is different from a physical one ... Entity, process, data store and data flow are the four main components of every data flow diagram. A external entity is also known as an actor, a ...

A logical DFD is different from a physical one ... to plan or record the specific/necessary details about how a system is working. As a level 2 data flow diagram (DFD), you can see more detail about ...