The Reliable Pharmaceutical Service (RPS) provides pharmaceutical preparation and delivery services to 12 different nursing homes in major cities Thailand. RPS accepts orders for nursing home patients...

The Reliable Pharmaceutical Service (RPS) provides pharmaceutical preparation
and delivery services to 12 different nursing homes in major cities Thailand. RPS
accepts orders for nursing home patients and delivers the orders in locked cases to each
nursing home. The service employs approximately 12 delivery personnel, 20
pharmacist’s assistants (PAs), six licensed pharmacists, and various office and clerical
staff.
Orders are normally phoned in by nurses or administrative personnel within each unit
of a client nursing home. A nursing home unit is either an entire floor or a wing within
a floor (for example, third floor east wing). Orders identify the unit, individual patients
by name and room number, drugs prescribed, dosage, and quantity. Some prescriptions
are specified as a standing order, which is filled for each delivery until the prescription
is specifically canceled. Orders are entered into a computer system as they are received,
and a case manifest is immediately prepared. Orders are phoned or e-mailed in by 3:00
AM. and P.M. for deliveries starting at 6:00 AM, and P.M.
A licensed pharmacist reviews each case manifest as it is received and allocates the
work needed to fill each portion of the order to PAs, another licensed pharmacist, or to
himself or herself. All drugs for a single patient are collected in one plastic drawer of a
locking case. Each case is marked with the institution name, floor number, and wing
number (if applicable). Each drawer is marked with the patient’s name and room
number. Dividers are inserted within a drawer to separate multiple prescriptions for the
same patient.

From the above information, prepare Context level DFD and Diagram-0 DFD for the above system