Chapter 5 - Information systems concepts. After studying this chapter you will be able to: List and discuss, in order, the steps in the systems development life cycle; explain the advantages and disadvantages of using the SDLC; apply the SDLC in accounting contexts; list and discuss the levels of the capability maturity model; classify organizations' processes according to the CMM; explain factors managers should consider when choosing IT for an AIS. | Chapter 5 Information Systems Concepts Outline Expected outcomes Importance in AIS Systems development life cycle Capability maturity model IT selection for the AIS Expected outcomes List and discuss, in order, the steps in the systems development life cycle. Explain the advantages and disadvantages of using the SDLC. Apply the SDLC in accounting contexts. List and discuss the levels of the capability maturity model. Classify organizations’ processes according to the CMM. Explain factors managers should consider when choosing IT for an AIS. Importance in AIS AIS is a “subset” of an organization’s management information system. Such systems are increasingly integrated in practice through ERP and other technologies. AIS is interdisciplinary at its core. Systems development life cycle One good way to develop and implement an information system Widely used in both AIS and MIS Seven steps Initiation / planning Requirements analysis Design Build Test Implementation Operations and maintenance Systems development life cycle Advantages Structure Ability to replicate Frequent user input Documentation requirements Often able to handle more complex projects than other development models Strong control Disadvantages Cost Time Tendency toward unnecessary project expansion because of user input Rigidity The chapter doesn’t talk a lot about the advantages and disadvantages of the SDLC; rather, it asks students to investigate and brainstorm them. There are several test bank questions on this topic, so going over this slide in detail will be fairly important. Systems development life cycle Let’s consider an example of how the SDLC would work for an AIS project. Initiation / planning A manager identifies a need to track the condition and maintenance of fixed assets more closely. A feasibility study is conducted; the project is determined to be feasible. Systems development life cycle Requirements analysis Through interviews, observation, flowcharts and other . | Chapter 5 Information Systems Concepts Outline Expected outcomes Importance in AIS Systems development life cycle Capability maturity model IT selection for the AIS Expected outcomes List and discuss, in order, the steps in the systems development life cycle. Explain the advantages and disadvantages of using the SDLC. Apply the SDLC in accounting contexts. List and discuss the levels of the capability maturity model. Classify organizations’ processes according to the CMM. Explain factors managers should consider when choosing IT for an AIS. Importance in AIS AIS is a “subset” of an organization’s management information system. Such systems are increasingly integrated in practice through ERP and other technologies. AIS is interdisciplinary at its core. Systems development life cycle One good way to develop and implement an information system Widely used in both AIS and MIS Seven steps Initiation / planning Requirements analysis Design Build Test Implementation .
