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