Introduction to system development and systems analysis
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Transcript of Introduction to system development and systems analysis
INTRODUCTION TO SYSTEM DEVELOPMENT AND SYSTEMS ANALYSIS
By Yeasin Md. Esha Nazia ZahidMohammad Hisham Mahadia Hasan
TABLE OF CONTENT The systems development life
cycle Planning systems developmentFeasibility analysis Behavioral Aspects of change System Analysis
SYSTEM DEVELOPMENT
System Analysis
Conceptual design
Physical Design
Implementation And
conversion
Operations and maintenance
System Development
Cycle
EXAMPLE
Operations and maintenance
Find other requirements Correct and maintain control
implementation and conversionMake a pilot test Use it in real life scenario
Physical designformulate how to input Make the worksheet
Conceptual designAccounting knowledge Excel or accounting software
System AnalysisAccounts receivable sheet Inventory system
PLANNING SYSTEM DEVELOPMENT
Master plan
Project developmen
t plan
PLANNING TECHNIQUES PERT( Program evaluation and review
technique) Gantt chart
BEHAVIORAL ASPECTS OF CHANGEPositive and negative ways of people’s reaction to change, minimizing these behavioral reactions is crucial for successfully implementing a new system.
HOW BEHAVIORAL PROBLEM OCCURSTo minimize adverse behavioral reactions, one must know why resistance takes place. Some important factors are given below:
FearTop
Management support
Experience with prior changes Communication
Disruptive nature of change
Emotion and Bias
Personal characteristics
And background
FORMS OF RESISTANCEResistance takes one of three forms:
Aggression Projection Avoidance
PREVENTING BEHAVIORAL PROBLEMS
Obtain management
supportMeet user
needs Involve usersAllay fears,
and stress new opportunities
Avoid emotionalism
Provide training
Reexamine performance evaluation
Keep communication
lines open
Test the system
Keep the system simple, and humanize
it
Control users’ expectations
FEASIBILITY ANALYSISAn investigation to determine whether it is practical to develop a new application or system
ASPECTS OF FEASIBILITY ANALYSIS
Feasibility analysis
Economic feasibility
Technical feasibility
Legal feasibility
Schedule feasibility
Operational
feasibility
EXAMPLE
CALCULATING ECONOMIC FEASIBILITY
Capital budgetin
g techniqu
es
Pay-back
period
Internal rate of return
Net present value
SYSTEM ANALYSIS
STEPS OF SYSTEM ANALYSIS
Initial Investigation System Survey Feasibility Study
Information needs and system
requirements System Analysis
report
THANK YOU
SYSTEM SURVEY Objectives of system survey
Understanding company operation Assessment of current and future process Develop working relationships Collect data
METHODS OF COLLECTING DATA Interview Questionnaire Observation System documentation
STRATEGIES TO DETERMINE AIS REQUIREMENTS Ask users what they need Analysis external system Examine existing system Create a prototype