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Lecture Chapter 16: Making the system operational

Lecture "Chapter 16: Making the system operational" provides students with the knowledge: Program development, order of implementation, structure chart for a payroll system, system flowchart for a payroll system, construction and test plan,.Invite you to consult. | 16 16 Chapter 16 Making the System Operational Systems Analysis and Design in a Changing World 3rd Edition Learning Objectives Describe implementation and support activities Choose an appropriate approach to program development Describe various types of software tests and explain how and why each is used Systems Analysis and Design in a Changing World 3rd Edition 2 16 16 Learning Objectives continued List various approaches to data conversion and system installation and describe the advantages and disadvantages of each Describe different types of documentation and the processes by which they are developed and maintained Describe training and user support requirements for new and operational systems Systems Analysis and Design in a Changing World 3rd Edition 3 Overview This chapter focuses on activities of implementation and support phases of systems development life cycle SDLC Implementation activities occur before system is turned over to users Implementation consumes more time and resources than earlier phases of the SDLC Support activities occur after system becomes operational and may continue for years Systems Analysis and Design in a Changing World 3rd Edition 4 Activities of the Implementation and Support Phases 16 Program Development Program development is time consuming One-third of development labor One-third to one-half of project development schedule Programming and testing considerations Required resources Managerial complexity System quality 16 Systems Analysis and Design in a Changing World 3rd Edition 5 Systems Analysis and Design in a Changing World 3rd Edition 6 16 16 Order of Implementation Input process output IPO development order Based on data flow through system Simplifies testing User interfaces developed early to reduce change Disadvantage is late implementation of outputs Structured design - IPO order based on system flowchart and structure chart OO design - IPO order in package diagrams Systems Analysis and Design in a Changing World 3rd