1. Create a logical data flow diagram of the current business system.

2. Create a logical data flow diagram for the new business system

3. Create an E-R Diagram of the system entities for the proposed new payroll and revenue systems, clearly showing the relationships between the entities

INFT6500 Accounting Information Systems Assessment 2 & 3-Narrative Overview - Pressure Hydraulics Pressure Hydraulics is a locally owned business that currently has three service centres; Scone, Eastwood and Wollongong. Each service centre provides maintenance and specialised servicing of hydraulic systems as used in trucks and earth moving equipment. The Scone service centre also provides a specialty service to the mining industry using purpose built trucks to service a range of mining equipment onsite The business has become quite profitable in the past years and its owner, Allan Taylor, has devised plans to expand by opening service centres at Coffs Harbour and Gosford. Allan longer term plans for other service centres along the east coast of NSW and nationally. He feels that the time is right to look at how IT can support the existing business AND enable his future business plans. Currently, Allan spends a portion of each week at each service centre to monitor its operations. This entails a great deal of travel and is leaving little time to continue developing his business. He realises he will not be able to spend the same sort of time in the Coffs Harbour and Gosford service centres. Existing System Each service centre operates as an independent business, with eight technicians in the workshop (one of whom is a workshop foreman) and one office assistant. The office assistant takes phone calls from people requesting quotes for work or to have work done. For requests on quotes, the office assistant looks up a hand copy of a price book (known as The Price Book) and gives a verbal quote. Allan is unhappy with the time being taken to update the Price Book as the office assistant is often too busy to update the prices from the supplier invoices. Sometimes, this time delay results in either lost sales if the price has gone down or lost income if the price has gone up. If a customer phones to make a booking for work to be done, the office staff assistant writes down the details in a joumal (Work Book). Any variations to the Works Book by a customer requesting to change a date/time results in crossed out entries. There have been times when this has been the cause of misinterpretation as to when a job is booked in. Other problems with the system include occasional overbooking or slack periods for the workshop staff. When a customer arives at a service centre for work to be done, the office staff member writes out a Job Card with the customer details along with the price from The Price Book for the job. There is sometimes a dis screpancy between what the Price Book shows and what the customer says they were quoted for that When completed, the Job Card is passed to the workshop foreman who assigns the job to a technician. When the job is completed, the technician initials the Job Card and gives it back to the workshop foreman, who returns it to the office. The office assistant writes out an invoice and collects payment from the customer; cash, EFTPOS and credit card are acceptable forms of payment. Once per week, the office assistant uses the Job Cards to prepare an order for stock replacement