Data Flow Diagrams a) Draw a context level DFD for the following UoD:

When a patient arrives at a clinic with a repeat prescription request, the receptionist checks the prescription file and prints out the prescription. This has to be authorised by the doctor before being passed to the pharmacist for dispensing. The pharmacist then prepares and gives the prescription medication to the patient. If the patient is entitled to free prescriptions, the pharmacist verifies this and records the appropriate details on the free prescriptions register. Otherwise the pharmacist receives the payment from the patient and gives them a receipt.

b) Draw an example of a level 0 DFD with at least two processes and one data store.