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
KEYTERMS






Feasibility report
Professional problem solving
model
Request for proposal (RFP)
Request for quotation (RFQ)
System conversion
Systems analysis
KEYTERMS





Systems design
Systems development life
cycle (SDLC)
Systems development
process
Systems implementation
Systems investigation