Exam 1 study guide - Chapter1InformationSystemsinBusiness...

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Chapter 1 Information Systems in Business Apple Case : 1) Using Porter’s Five Force Model, analyze Apple’s buyer power and supplier power: Initial buyer power is low so take advantage of it as long as possible. Buyer power increased as threats for substitutes came in. Narrow focus, a little bit differentiated. Porter’s 5 forces model : Supplier sell to> Us, we sell to> Customers (buyers) Supplier power is high when buyers don’t have a lot of choices Supplier power is low when buys have a lot of choices Buyer power is high when buyers have a lot of choices Buyer power is low when buyers have limited choices Threat of new entrants is high when its easy for people to enter the market Porters three generic strategies model Walmart: Cost leadership Neiman Marcus: Differentiation Payless and Tiffany & co: focused strategy Value Chain & Value chain analysis: Value chain – views an organization as a series of processes, each of which adds value to the product or service for each customer Value chain analysis: Support value activities support the primary value activities Chapter 2 Decisions and Processes: Value Driven  Business  Operational Support System : employees develop, control and maintain core business activities required to run the day-to-day operations. Operational decisions are considered structured decisions which are repetitive in nature. Leaders: lower management, department management, analysts, staff
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Managerial Support System : employees are continuously evaluating company operations to hone the firms abilities to identify, adapt to, and leverage change. Cover short and medium-range plans, schedules, and budgets along with procedures and business objectives for the firm. Covers semistructured decisions (ex. Decisions about producing new products. Leaders: middle management, managers, directors Strategic Support System : Managers develop overall business strategies, goals, and objectives as part of the company’s strategic plan. Also monitor the strategic performance of the org. and its overall direction. Highly unstructured decisions (occurring in situations in which no rules exist to guide decision makers toward correct choice. Leaders: Senior management, presidents, leaders, executives Transaction Processing systems : The basic business system that serves the operational level (analysts) and assists in making structured decisions. Most common example: operational accounting system such as a payroll system or and order- entry system (OPERATIONAL AND STRUCTURED) Decision Support Systems : model information using online analytical processing (OLAP) which provides assistance in evaluating and choosing among different courses of action.( MANAGERIAL AND SEMISTRUCUTRED)Techniques: What-If Analysis, checks impact of a change in a variable or assumption on the model Sensitivity Analysis, study of the impact on other variables when one variable is changed repeatedly Goal-seeking Analysis, finds the inputs necessary to achieve a goal such as a desired level of output
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This note was uploaded on 11/21/2011 for the course ITM 309 taught by Professor Rodammer during the Fall '08 term at Michigan State University.

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Exam 1 study guide - Chapter1InformationSystemsinBusiness...

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