Reference no: EM133055783

Question - DFD Exercise - Ef-One service centre (F1SC) is an authorised service centre that provides a good quality of car checking and maintenance service for its customers. Their services includes cleaning, polishing and regular car maintenance service. Any customer who wants to have regular service of their car may just straight away go to F1SC. No pre-booking appointment is needed.

When a walk-in customer arrives at F1SC, the customer needs to inform their particular and car details such as customer ID number, plate number and type of car to the clerk on duty. The clerk records the customer and car details, and updates the data in the customer's car file if there is any remark about the car from the customer. Once she finish the tasks, she hands over the car to a foreman in charged for further car inspection and maintenance service. While the car is being serviced, the customer can wait at a lounge area and enjoy the beverages provided.

At the service area, the foreman fetches the customer's car file to see the car's previous service details before performing the car inspection and maintenance service, such as replenishment of oil, fluids, coolant, wiper blades, belting, brake, spark plugs, gaskets, and other parts. After the car final inspection and service are completed, the foreman then records the details of the services done and update next service date in the customer's car file. He also records all parts that are used for the maintenance service in a parts inventory file and if some of the parts for the maintenance are not sufficient in the inventory, he puts a remark in that file.

Based on the updated customer's car file, the clerk brief to the customer on the technical aspects maintenance that have been done to the car before handover it to the customer and then prepares a bill to customer that details out the parts and labour charges for the maintenance service. As soon as the customer makes the payment, the clerk issues a receipt to the customer and files both copies of the bill and receipt in a payment file. At the end of the week, the clerk checks the parts inventory file and places order for the parts that have reached minimum quantity level from the supplier based on the registered supplier file. At the end of the month, the clerk uses the records in payment file and part inventory file to prepare sales and inventory reports to F1SC manager.

REQUIRED -

(a) Draw a context diagram for F1SC maintenance service system.

(b) Draw a logical data flow diagram (DFD) level 0 for F1SC maintenance service system.