Tutorial%204 - 2 City Bus Lines Situation: City Bus Lines...

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CSE1IS Tutorial Page 1 of 1 TUTORIAL 4 S YSTEM ANALYSIS : D ATA AND P ROCESS M ODELING Short Questions 1. Describe data and process modeling and name the main data and process modeling techniques. 2. Describe a data dictionary and give examples of how and when it is used. 3. Discuss the pros and cons of decision tables versus decision trees. Applications Questions 1 Precision Tools Situation: Precision Tools sells a line of high-quality woodworking tools. When customers place orders on the company’s Web site, 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. 1.Draw a context diagram for the order system. 2.Draw a diagram 0 DFD for the order system. 3.Name four attributes that you can use to define a process in the order system. 4.Name four attributes that you can use to define an entity in the order system.
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Unformatted text preview: 2 City Bus Lines Situation: City Bus Lines is developing an information system that will monitor passenger traffic, peak travel hours, and equipment requirements. The IT manager wants you to document a process called BALANCE that determines whether extra buses currently are needed on a particular route. The BALANCE process automatically assigns additional buses to that route, but only if all other routes are operating on schedule. In any case, a supervisor can override the automatic BALANCE process if he or she so desires. 1.Create a decision table that describes the bus transfer process. 2.Draw a decision tree that describes the bus transfer process. 3.Name four attributes that you can use to define a data flow in the bus information system. 4.Name four attributes that you can use to define a data store in the bus information system....
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