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1、1Systems Analysis and Design in a Changing World, Fourth Edition1Systems Analysis and Design in a Changing World, 4th Edition2Learning ObjectivesuExplain the key role of a systems analyst in businessuDescribe the various types of systems an analyst might work onuExplain the importance of technical,
2、people, and business skills for an analystuExplain why ethical behavior is crucial for a systems analysts career1Systems Analysis and Design in a Changing World, 4th Edition3Learning Objectives (continued)uDescribe the many types of technology an analyst needs to understanduDescribe various job titl
3、es and places of employment where analysis and design work is doneuDiscuss the analysts role in strategic planning for an organizationuDescribe the analysts role in a system development project1Systems Analysis and Design in a Changing World, 4th Edition4OverviewuInformation systems lCrucial to succ
4、ess of modern business organizationslConstantly being developed to make business more competitivelImpact productivity and profitsuKeys to successful system developmentlThorough systems analysis and designlUnderstanding what business requires1Systems Analysis and Design in a Changing World, 4th Editi
5、on5Overview (continued)uSystems analysis process of understanding in detail what a system should accomplishuSystems design process of specifying in detail how components of an information system should be physically implementeduSystems analyst uses analysis and design techniques to solve business pr
6、oblems using information technology1Systems Analysis and Design in a Changing World, 4th Edition6The Analyst as a Business Problem SolveruHas computer technology knowledge and programming expertiseuUnderstands business problemsuUses logical methods for solving problemsuHas fundamental curiosityuWant
7、s to make things betteruIs more of a business problem solver than a technical programmer1Systems Analysis and Design in a Changing World, 4th Edition7Analysts Approach to Problem SolvingVerify benefits of solving problem outweigh the costsResearch and understand the problemDefine the requirements fo
8、r solving the problemDevelop a set of possible solutions (alternatives)Define the details of the chosen solutionMonitor to ensure desired resultsDecide which solution is best and recommendImplement the solution1Systems Analysis and Design in a Changing World, 4th Edition8Systems That Solve Business
9、ProblemsuSystem interrelated components functioning together to achieve an outcomeuInformation systems collection of interrelated components that collect, process, store, and provide as output information needed to complete tasksuSubsystem part of a larger systemuSupersystem larger system that conta
10、ins subsystemsuFunctional decomposition dividing a system into smaller subsystems and components1Systems Analysis and Design in a Changing World, 4th Edition9Information Systems and Subsystems1Systems Analysis and Design in a Changing World, 4th Edition10Information Systems and Component Parts1Syste
11、ms Analysis and Design in a Changing World, 4th Edition11System Boundary vs. Automation Boundary1Systems Analysis and Design in a Changing World, 4th Edition12Types of Information SystemsuTransaction processing systems (TPS)lCapture and record information about organizations transactions uManagement
12、 information systems (MIS)lTake information captured by TPS lProduce reports for planning and controluDecision support / knowledge-based systems (DSS/KBS)lExplore impact of available options or decisions (what-if scenarios)lAutomate routine decision making1Systems Analysis and Design in a Changing W
13、orld, 4th Edition13Types of Information Systems (continued)uEnterprise applicationslHighly integrated systems that support company-wide operations and datalOften combine aspects of TPS, MIS, DSS/KBSuCommunication support systemslFacilitate communication internally and with customers and suppliersuOf
14、fice support systemslHelp employees create and share documents1Systems Analysis and Design in a Changing World, 4th Edition14Types of Information Systems (continued)1Systems Analysis and Design in a Changing World, 4th Edition15Required Skills of the Systems Analyst1Systems Analysis and Design in a
15、Changing World, 4th Edition16Technical Knowledge and SkillsuAn analyst should have fundamental technology knowledge oflComputers / peripheral devices (hardware)lCommunication networks and connectivitylDatabase and database management systems (DBMS)lProgramming languages (for example, VB.NET or Java)
16、lOperating systems and utilities1Systems Analysis and Design in a Changing World, 4th Edition17Technical Knowledge and Skills (continued)uAnalyst uses toolslSoftware productivity packageslIntegrated development environments (IDEs) for programming languageslCASE tools, testing, documentation support, reverse engineering, configuration management uAnalyst understands SDLC techniqueslProject planning, systems analysis lSystems design, databa
