Quiz - Chapters 6-8 - 2 Describe the messages from the...

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1 Marks: 5 Explain how the traditional approach and the object-oriented approach differ. The traditional approach views a system as a collection of processes while the object-oriented approach views the system as a collection of interacting objects. 2 Marks: 5 Describe how data flow diagrams can show the system at various levels of abstraction. A data flow diagram can show both high level (general view of a system) and low levels (detailed view of a single process) of abstractions. The high level process on one DFD can be decomposed in to separate low level detailed DFD's. 3 Marks: 5 Briefly describe the key elements of a sequence diagram The key elements of a sequence diagram are actors, depicted by stick figures, and objects, which are depicted as rectangles with the inside label underlined. 4 Marks: 5 What are the 4 steps to developing a sequence diagram? 1.) Identify the input messages.
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Unformatted text preview: 2.) Describe the messages from the external actor to the system 3.) Identify and add any special conditions for the message including iteration 4.) Identify and add the output return messages. 5 Marks: 5 List the key criteria used in selecting alternatives? 1.) The Company's Strategic Plan 2.) Economic Feasibility 3.) Schedule and Resource Feasibility 4.) Technological Feasibility 5.) Operational, Organizational and Cultural Feasibility 6 Marks: 5 Briefly describe: Facilities Management, Package Software, Turnkey Systems 1.) Facilities Management - The outsourcing of all data processing and information technology to an outside vendor. 2.) Package Software - Software that is already built and can be purchased as a package. 3.) Turnkey Systems - A complete system solution including hardware and software that can be turned over to the purchasing organization....
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