Should be consistent with DFD fragments and internally consistent at all levels. (I.e. context, level 0, and level 1). Context Diagram for your subsystem Diagram 0 for your subsystem One Level 1 Diagram

Royal Auto Services (RAS) provides car service and repairs for all models of cars. Jessie Stephenson owns the company. RAS started business in 2021 and expanded to 10 outlets located with 8 in Victoria and 2 in NSW by 2022. According to RACV, the motor vehicle repair and maintenance industry have grown steadily over the past five years due to growth in several motor vehicles on the road and growth in household disposable income. However, the service revenues for RAS have dropped substantially in the past five years. As a result, Management has been contemplating closing 5 of the lesser performing outlets in Victoria. Jessie Stephenson has recruited a new head of store operations, Jo Peters, who has plans to turn the business around. Jo Peters has contacted your company and are open to an innovative proposal to enable them to maintain their existing outlets and to improve sales and profits. Business Processes The following are the information on business processes that you have been provided to start off. It is not complete! The customer calls in to make appointments. The calls are made to the relevant branch. Most of its customers are the existing repeat customers or customers recommended by word-of-mouth. They do advertise via their staff who drive company vehicles which have RAS logo and contact emblazoned on the car. A customer is usually required to book in a service or repair the week before. Sometimes, walk-in customers are accepted if there is a slot available. On the day of the appointment, the vehicle will be brought in by the owner. The store manager explains the job description/details to the car owner before the service/repair. The details are recorded in a pre-printed book with carbon copies for customer and RAS. The owner would need to Page 4 of 6Page 5 of 6 choose an express or normal service/repair. In the event of an express service/repair, the owner may choose to wait at the service premise. The store manager would normally give an estimated price of the job and request for customer signature before proceeding. This could include many different jobs, including identify fault, change tyres, change the oil filter, wash the car, replace the exhaust. RAS also does a roadworthy test for car owners who are planning to sell their vehicles. The roadworthy certificate is a pre-printed hardcopy book with carbon copy one for the car owner, RAS and Vicroads. Depending on the type of job, materials/parts may be used. For example, tyres are materials used when the job is to replace tyres. Besides, a different job will entail different hours of labour. Jobs are costed based on materials/parts used and labour hours. The technicians will work on the jobs scheduled. Each technician will record their initials on each job for service order. However, before any major repairs are undertaken, the store manager would contact the owner to discuss and confirm before proceeding. Upon the completion of all the jobs, the store manager will verify the tasks completed, and calculate the costs of the entire service/repair. The store manager will print an invoice using MS Excel, and the customer can pay by cash or by credit card as the stores for an EFTPOS device, but this is not connected to any software. The customer is then given a receipt using MS Excel along with the EFTPOS receipt if the customer does not pay cash. Bookkeeping is done by several freelance bookkeepers who visit the stores regularly. The ledgers are then passed to an external corporate accountant who completes the annual reports. Current system Currently, all business processes related records are kept in a variety of ways including paper-based documents such post-it notes, in diaries and computer-based documents such as spreadsheets. This sometimes leads to errors. For example, a customer makes a booking over the phone or in-store, but the booking is lost, or if things get busy, a booking or cancellation might not be adequately recorded. From Jessies point of view, it is challenging to produce summary reports because the information is scattered and stored in a variety of formats. The new system vision Jessie Stephenson would like to automate as much of the current processing as is reasonably possible. For example, she envisions that customers should be able to make bookings, cancel bookings and view their reservations over the internet. Jessie would like to have a POS system which can keep track of customer accounts, car details, service jobs, and able to generate bill and receipts. The POS system should be linked to a parts inventory database, and when a customer pays by EFTPOS, the receipt would automatically be triggered by the POS system. She would like to get detailed analytical reports which will help him gauge his business performance and strategies on how to run his business better. The POS should also have an integrated accounting system, so that all expenses, payments, stock detail movements are also posted automatically to the system without a need for freelance bookkeepers. The system should also be able to generate Profit and Loss Statements and Balance Sheets. Page 6 of 6 Instead of closing the outlets, JO plans to maintain all existing outlets and expand by adding 3 more new outlets in NSW and 4 in SA. The expansion is planned for Jul 1 2024, in line with the rollout of an innovative and competitive IT solution. General information Jessie Stephenson has suggested that there is a small budget of $50,000 that could be spent on a suggested solution. However, she will need a compelling system vision document to allocate extra budget.

a DFD for the accounting subsystem