Physical Data Flow Diagram
An implementation dependent view of the current system, showing what task are carried out and how they are performed. Physical characteristics include - Names of people - Forms and document Name - Names of department - Master and transaction files - Equipments and devices used - Locations Most comprehensive and useful approach to developing an accurate and complete description of current system begins with the development of a physical DFD. The use of physical DFD is desirable for 3 reasons Firstly it is easier to describe the interaction between physical components then it is to understand the policies that are used to manage the applications. Secondly physical DFD are useful for communication with users. User’s relate easily to peop...