Alpha Ltd offers an audio-visual equipment hire service. The online sales process is described below. The customer sends an equipment hire request form containing their name, email address, phone number, dates of booking and equipment required. The Sales Assistant checks the details are complete and sends the form through to the Sales Consultant. The Sales Consultant uses the computer to check whether the equipment requested will be available on the dates required. The Sales Consultant emails the customer to advise them whether or not the equipment is available, and how much the equipment hire will cost. If the equipment hire is not available on their nominated dates, the customer is given some alternative hire dates. The email advises the customer to reply within seven days if they wish to proceed with the hire. The Online Sales Consultant files the hire request form in date order in their ‘Awaiting confirmation’ file.

Required For the process described above:

1. Prepare the structured narrative for every entity involved in this system. You are required to determine the input, processes, and the output of every entity within the structured narrative provided (5 marks).

2. Prepare a process map for the online sales process (4 marks).

3. Prepare a context diagram for the online sales process (2 marks).

4. Prepare a physical data flow diagram (DFD) for the online sales process (4 marks).

5. Prepare a logical data follow diagram (DFD) for the online sales process (4 marks).

6. Write a short report and explain the purpose and the characteristics of the process map, context diagram, physical data flow diagram, and the logical data flow diagram (2 marks

7. Who is likely to be the primary user of the logical flow diagram, physical data flow diagram, context diagram, and the process map?