After all the requirements for a proposed system have been gathered, they need to be modeled. Templates are created to visually represent the planned system so that business requirements can be easily mapped to system elements to ensure that all requirements have been collected completely and accurately. In this article, I will discuss two types of modeling, namely physical modeling and logical modeling. One of the reasons modeling is so important in systems analysis is that the system and all system requirements are precisely characterized. Data modeling is a way of speaking in terms that everyone can understand, from management to end users. According to data modeling and systems analysis, “the data model uses easily understandable notations and natural language, can be reviewed and verified by end users”. (The Role of Data Modeling in System Analysis, n.d.) Without modeling and full understanding of the system you are implementing you can arrive at disastrous results. It can result in the loss of large amounts of money. Modeling is a key function in the systems analysis process. It helps the analyst understand all stages of designing the new system and prevents the company from wasting time and money. Logic modeling deals with gathering system requirements and translating those requirements into a model. The logical model revolves around business demands and system requirements. Logical modeling involves gathering information about business procedures, data groups, and business units. After this information is assembled, diagrams and reports are produced including diagrams, business process diagrams and possibly process flow diagrams. The diagrams created should show existing processes and data, as well as t...... middle of paper ...... in both design phases that could be used once implementation begins. Finally, I discussed why it is important not to skip the systems analysis of the logical and physical modeling phase. Works Cited http://toolkit.pellinstitute.org/. (n.d.). How to create a logical model. Retrieved from http://toolkit.pellinstitute.org/evaluation-guide/plan-budget/use-a-logic-model-in-evaluation/ http://nnlm.gov/. (2012).Guide 5: Defining how a program will work: the logic model. Retrieved from http://nnlm.gov/outreach/community/logicmodel.html http://it.toolbox.com/. (2006). Logical and 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 systems analysis. Retrieved from http://www.umsl.edu/~sauterv/analysis/Fall2010Papers/Gao/