Logical and a Physical Model

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After all requirements have been gathered for a proposed system, they must be modeled. Models are created for visually represent the planned system so that business requirements can easily be associated with system items to ensure that all requirements have been completely and accurately gathered. In this paper, I will be discussing two types of modeling, and that is Physical modeling and Logical modeling. One reason why modeling is so important in systems analysis is so the system and all of the systems requirements are precisely characterized. Data modeling is a way to speak in terms that everyone can understand from management to end-users. According to data modeling and systems analysis, “the data model uses easily understood notations and natural language, it can be reviewed and verified by the end-users”. (The role of data modeling in system analysis, n.d.) without modeling and fully understanding the system that is being implemented disastrous results can come. It can result in large amounts of money being lost. Modeling is a key function in the systems analysis process. It helps the analyst understand all phases of the new systems design and keeps the business from losing time and money. Logical modeling deals with gathering system requirements and translating those requirements into a model. The logical model revolves around the requests of the business and system requirements. Logical modeling involves collecting information about business procedures, groups of data, and business units. After this information is assembled, diagrams and reports are produced including diagrams, business process diagrams, and eventually process flow diagrams. The diagrams created, should show the processes and data that exist, as well as t... ... middle of paper ... ...in both design phases that could be used one implementation begins. Finally, I have discussed why it is important not to skip the logical and physical modeling phase’s systems analysis. Works Cited http://toolkit.pellinstitute.org/. (n.d.). How to Create a Logic Model. Retrieved from http://toolkit.pellinstitute.org/evaluation-guide/plan-budget/use-a-logic-model-in-evaluation/ http://nnlm.gov/. (2012). Guide 5: Define How a Program Will Work - The Logic Model. Retrieved From http://nnlm.gov/outreach/community/logicmodel.html http://it.toolbox.com/. (2006). Logical vs. Physical Design: Do You Know the Difference?. Retrieved from http://it.toolbox.com/blogs/irm-blog/logical-vs-physical-design-do-you-know-the-difference-9011 http://www.umsl.edu/. (n.d.). Data Modeling in System Analysis. Retrieved from http://www.umsl.edu/~sauterv/analysis/Fall2010Papers/Gao/

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