CH5Solution - 1 Kitchen Gadgets Kitchen Gadgets sells a...

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1 Kitchen Gadgets Kitchen Gadgets sells a line of high-quality kitchen utensils and gadgets. When customers place orders on the company’s Web site or through e lectronic data interchange (EDI), the system checks to see if the items are in stock, issues a status message to the customer, and generates a shipping order to the warehouse, which fills the order. When the order is shipped, the customer is billed. The system also produces various reports. Tasks 1. List four elements used in DFDs, draw the symbols, and explain how they are used. A process receives input data and produces output that has a different content, form, or both. For instance, the process for calculating pay uses two inputs (pay rate and hours worked) to produce one output (total pay). The symbol for a process is a rectangle with rounded corners. A data flow is a path for data to move from one part of the information system to another. A data flow in a DFD represents one or more data items. The symbol for a data flow is a line with a single or double arrowhead. A data store is used in a DFD to represent data that the system stores because one or more processes need to use the data at a later time. The symbol for a data store is a flat rectangle that is open on the right side and closed on the left side.
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  • Spring '10
  • TaiDat
  • MIS, Big State University, DFDs

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