When a customer contacts the company to ask for an estimate, the proprietor makes a note of the customer’s contact details and an outline of the proposed work. He agrees a date with the customer to view the property in order to give an estimate of the cost for the work. When visiting the property on the agreed date the proprietor adds more detail to the outline of the proposed work. Within 3 days of visiting the property the proprietor produces a fully detailed estimate and sends it to the customer. If the customer agrees the estimate, the proprietor schedules a date to start the job (this is based on the size of the job and other jobs that have already been scheduled). A few days before the agreed start date of a job, the proprietor contacts the customer to confirm the start date, and then orders the required building materials from suppliers to be delivered on the date the job starts. At the end/completion of the job the proprietor calculates the actual cost of the job to produce an invoice which is sent to the customer. The customer has 30 days to pay the invoice. Produce a data flow diagram representing the management of building jobs
When a customer contacts the company to ask for an estimate, the proprietor
makes a note of the customer’s contact details and an outline of the proposed
work. He agrees a date with the customer to view the property in order to give
an estimate of the cost for the work. When visiting the property on the agreed
date the proprietor adds more detail to the outline of the proposed work. Within
3 days of visiting the property the proprietor produces a fully detailed estimate
and sends it to the customer. If the customer agrees the estimate, the proprietor
schedules a date to start the job (this is based on the size of the job and other
jobs that have already been scheduled).
A few days before the agreed start date of a job, the proprietor contacts the
customer to confirm the start date, and then orders the required building
materials from suppliers to be delivered on the date the job starts. At the
end/completion of the job the proprietor calculates the actual cost of the job to
produce an invoice which is sent to the customer. The customer has 30 days to
pay the invoice.
Produce a data flow diagram representing the management of building jobs
Level-0 is also known as context diagram. It shows the basic design and overview of the system.
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