Draw the context and 0 level data flow diagrams for a system that has following functions: Build-Right is a company offering house building and property improvement services to the public. The proprietor of the company employs a number of skilled workers such as bricklayers, carpenters and plumbers. The proprietor manages the building projects himself, and occasionally helps with the construction work. Build-Right wants to computerise the management of building work. This includes processing of cost estimates, job scheduling, and payments as described below. · When a customer contacts the company to ask for an estimate, the proprietor makes a note of the customer’s contact details and records 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 three days of visiting the property the proprietor produces a fully detailed cost 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 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
Draw the context and 0 level data flow diagrams for a system that has following functions:
Build-Right is a company offering house building and property improvement services to the public. The proprietor of the company employs a number of skilled workers such as bricklayers, carpenters and plumbers. The proprietor manages the building projects himself, and occasionally helps with the construction work. Build-Right wants to computerise the management of building work. This includes processing of cost estimates, job scheduling, and payments as described below.
· When a customer contacts the company to ask for an estimate, the proprietor makes a note of the customer’s contact details and records 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 three days of visiting the property the proprietor produces a fully detailed cost 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 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.
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Produce a data flow diagram representing the management of building jobs
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