Reference no: EM132207054
Develop a context diagram and a level-0 diagram based on the following “Buy & Sell” company’s scenario. Make sure that your level-o diagram should be detail enough. That is, it should have enough number of processes. If you discover while drawing the diagram that the scenario is incomplete, make up reasonable explanations to complete the story. Supply your explanations along with the diagram.
In drawing the diagrams, you can draw the diagrams by hand on paper.
(Scenario)
Customer
• Places orders of items
The company
• Keeps records of its regular customers
– Names and addresses
– History of purchases (records of items, date, etc.)
Accounting dept
• When an order is received, Accounting dept checks credit-worthiness of the customer from past records
– Bad-credit
• Order is rejected with rejection message
– Good-credit
• Item ordered are checked against a list of items that the company deals with
Item
• Items not found on the list
– Send regret message to the customer
• Items found on the list
– Ordered items are checked for availability in the inventory held
• Items are not available in required quantity
– Items along with the customer order details are stored separately pending orders
• Items are available in required quantity
– Items are sent to the customer along with a packing slip and an invoice
– Inventory is updated with the sales amount
– Generate sales statistics
Purchase dept
• Issue item requests periodically
• Check against the pending orders
• Determine total quantity required for each item
• Check the supplier details
• Generate purchase orders for the items to suppliers
Management
• Makes queries with regard to statistics of sales and purchases
• Receive answer for the queries