Chap 1 - Systems Analysis and Design 8th Edition Chapter 1...

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Systems Analysis and Design 8th Edition Chapter 1 Introduction to Systems Analysis and Design
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Chapter Objectives Discuss the impact of information technology on business strategy and success Define an information system and describe its components Explain how profiles and models can represent business functions and operations Explain how the Internet has affected business strategies and relationships 2
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Chapter Objectives Identify various types of information systems and explain who uses them Distinguish between structured analysis, object-oriented analysis, and agile methods Compare the traditional waterfall model with agile methods and models Discuss the role of the information technology department and the systems analysts who work there 3
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Introduction Companies use information as a weapon in the battle to increase productivity, deliver quality products and services, maintain customer loyalty, and make sound decisions. 4
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The Impact of Information Technology Information Technology (IT) Combination of hardware and software products and services that companies use to manage, access, communicate, and share information The Future of IT Will see robust growth for at least a decade The greatest need will be for systems analysts, network administrators, data communications analysts, and software engineers 5
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The Impact of Information Technology The Role of Systems Analysis and Design Systems Analysis and Design Step-by-step process for developing high-quality information systems Systems Analyst Plan, develop, and maintain information systems 6
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The Impact of Information Technology Who develops Information Systems? In-house applications Software packages Internet-based application services Outsourcing Custom solutions Enterprise-wide software strategies How versus What 7
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Information System Components A system is a set of related components that produces specific results A Mission-critical system is one that is vital to a company’s operations Data consists of basic facts that are the system’s raw material Information is data that has been transformed into output that is valuable to users Information systems have five key 8
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Information System Components Hardware Is the physical layer of the information system Moore’s Law Software System software Application software Enterprise applications 9
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Information System Components Software Horizontal system Vertical system Legacy systems Data Tables store data By linking the tables, the system can extract specific information 10
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This note was uploaded on 01/30/2012 for the course CNIT 180 taught by Professor Victorbarlow during the Spring '12 term at Purdue University.

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Chap 1 - Systems Analysis and Design 8th Edition Chapter 1...

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