tailieunhanh - Lecture Accounting information and reporting systems - Chapter 5: System requirements

In this chapter, you will learn: To understand the basic types of system development and the reasons for system development; to gain an appreciation and understanding of a typical system development life cycle; to identify and define the essential elements of system planning, systems analysis and system design; to acquire the ability to conduct a system needs/requirements analysis; to be able to apply the principles of conflict resolution in a system development environment. | System requirements Learning objectives To understand the basic types of system development and the reasons for system development. To gain an appreciation and understanding of a typical system development life cycle. To identify and define the essential elements of system planning, systems analysis and system design. To acquire the ability to conduct a system needs/requirements analysis. To be able to apply the principles of conflict resolution in a system development environment. key terms brainstorming business process re-engineering centralised systems conflict resolution in-house system range checks reasonableness checks sequence checks tangible benefits validation checks Reasons for system development Creation of a new organisation Internal and external changes bring new needs Existing system is inadequate or outdated Reporting requirements have changed New technology – new software and hardware Need to increase productivity Need to increase customer satisfaction System development life cycle System planning Systems analysis System design System implementation and maintenance System monitoring and review System development life cycle System planning Systems analysis System design System monitoring and review System implementation System planning Develop a master plan: encompasses all other phases in cycle Identify future information needs: incorporate long-range organisational plans Identify the system to be developed Plan for its development project Appoint a steering committee Systems analysis The four steps of the systems analysis phase: Surveying or evaluating the current system Identifying information needs Identifying system requirements Preparing the systems analysis report Evaluation of present system The necessity for procedures now in use The importance of all steps followed Cost effectiveness of current procedures Suitability of source document design Usefulness of generated reports Deficiencies in reports Adequacy of system documentation . | System requirements Learning objectives To understand the basic types of system development and the reasons for system development. To gain an appreciation and understanding of a typical system development life cycle. To identify and define the essential elements of system planning, systems analysis and system design. To acquire the ability to conduct a system needs/requirements analysis. To be able to apply the principles of conflict resolution in a system development environment. key terms brainstorming business process re-engineering centralised systems conflict resolution in-house system range checks reasonableness checks sequence checks tangible benefits validation checks Reasons for system development Creation of a new organisation Internal and external changes bring new needs Existing system is inadequate or outdated Reporting requirements have changed New technology – new software and hardware Need to increase productivity Need to increase customer satisfaction System .