CIS339 Week 1 Homework

CIS339 Week 1 Homework - CIS339 Chapter 1. Questions p. 36...

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CIS339 Chapter 1. Questions p. 36 #2 Describe the major phases in the SDLC. System initiation - Identify the problem. System analysis - Analyze and understand the problem, Identify solution requirements or expectations System design - Identify alternative solutions and choose the “best” course of action, Design the chosen solution. System implementation - Implement the chosen solution, Evaluate the results Maintenance - If the problem is not solved, return to System Initiation #9 Compare and contrast process-centered methodologies with data-centered methodologies. Process-Centered emphasizes the process models as the core of the system concept. If it was about making a Car, the focus would be on processes such as AssembleDoor, or InstallWindsheild. Data-Centered emphasizes on the data models as the core of the system concept. If it was about making cars, these would be either Workers or Machine that does the process. Object-Oriented methodologies attempt to balance the focus between Process and Data. #10 Compare and contrast structured design-based methodologies in general to RAD-based methodologies in general. Structured design-based methodologies are a step-by-step approach to the SDLC that moves logically from one phase to the next. The original structured design called Waterfall Development was an example, it starts with Planning and the next phase only starts after the previous phase has been completed. Because of this approach, this was very time consuming. Rapid Application Development or RAD attempts to address both weakness of the structured design by adjusting the SDLC phases to get some part of the system developed quickly and into the hands of the user. This helps with getting the feedback and revising the system before getting the final product. #14 Describe the major elements and issues with phased development. Phased development approach breaks the overall system by versions, with version 1 being implemented with having the most important and fundamental requirements. Work on version 2 begins with analysis formed based on previously identified requirements. This continues until the system is complete or no longer needed. This is why most applications have
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CIS339 Week 1 Homework - CIS339 Chapter 1. Questions p. 36...

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