Data Flow Diagram Components of a Data Flow Diagram

							                  Data Flow Diagram: Components of a Data Flow Diagram

Below is a list of the components of a Data Flow Diagram for the Doctors Surgery example that
we have preciously looked at:

Input/Output

       -     Patients

       -     Previous Doctors Surgery

Data Store

       -     Patient Application Form

       -     Medical Records

Processes

       -     Information collated ready for processing

       -     Information entered into patient database

       -     Information entered into patient database (verification)

       -     New member query selects all newly joined members (qryNewMember)

       -     Membership confirmation letter generated