Chapter 14 INTRODUCTION TO SYSTEMS DEVELOPMENT

Systems Development Methodology Important issues in systems development: Must be aligned to business strategy and objectives Business processes can undergo radical changes as a result Developing or modifying applications is obviously a key component

Systems Development Methodology Important issues in systems development: Consideration of the IT environment is important 4 key elements of the IT environment: 1. IT strategy 2. IT infrastructure 3. IT function 4. Systems development process

Systems Development Methodology Systems development models and techniques: 2 problem solving aids Techniques Models

Systems Investigation Objectives Tasks Key tasks: Business strategy AIS applications Business process IT environment Task Issues

Systems Investigation Conducting systems investigation Executive summary Problem Assignment Purpose of report Findings/results Conclusions and recommendations

Systems Investigation Models/techniques used in systems investigation

Systems Analysis Objectives Tasks Key tasks: Business strategy AIS applications Business process IT environment Task issues Conducting systems analysis Models/techniques used in systems analysis

Systems Design Objectives Tasks Key tasks: Business strategy AIS applications Business process IT environment Task issues Conducting systems design Models/techniques used in systems design

Systems Implementation Objectives Tasks: Key tasks Business strategy AIS applications Business process IT environment Task issues

Implementation Activities Personnel selection and trainning Physical site preparation Detailed system design Application software development Software testing System testing Documentation File conversion System conversion

System Conversion Direct conversion approach Parallel operation approach Modular conversion approach Phased conversion approach

Problem Solving Approach to Systems Development Define and acquire Develop Communicate

Appendix 14.A : Techniques for Acquiring Information Information gathering plan Using prior knowledge in developing an information gathering plan Identifying information needs Identifying sources of information

Appendix 14.A : Techniques for Acquiring Information Interview planning Determine interview questions Determine sequence of interview questions Decide on wording of interview questions

Appendix 14.B : Report Writing Business reports Audience analysis Executive summary Problem Professional assignment Rhetorical purpose Findings/results Conclusions Recommendations

Appendix 14.B : Report Writing Executive summary guidelines Discussion section Introduction Criteria Method of obtaining facts Alternatives Evaluation Conclusions Recommendations

K E Y T E R M S Feasibility report Professional problem solving model Request for proposal (RFP) Request for quotation (RFQ) System conversion Systems analysis

K E Y T E R M S Systems design Systems development life cycle (SDLC) Systems development process Systems implementation Systems investigation