Problems and Solutions in Information Systems Development: A Comprehensive Overview, Slides of Object Oriented Programming

The challenges and issues in information systems (is) development from the perspectives of end users, clients, and developers. It also discusses reasons for is project failures, costs of failure, and methods to avoid such problems. Various is development models and the use of computer-aided software engineering (case) tools.

Typology: Slides

2011/2012

Uploaded on 07/17/2012

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Problems in IS Development
and Solutions
Lecture 3
2
Problems in IS development
nEnd user perspective
nWhat system?
nDifficult to use
nDoesn’t do anything useful
3
Problems in IS development
nClient’s Perspective
nThe project is over budget
nThe project is late
nPoor implementation
nIS does not meet requirements
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pf4
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Problems in IS Development

and Solutions

Lecture 3

Problems in IS development

n End user perspective

n What system?

n Difficult to use

n Doesn’t do anything useful

Problems in IS development

n Client’s Perspective

n The project is over budget

n The project is late

n Poor implementation

n IS does not meet requirements

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Problems in IS development

n Developer’s Perspective

n The users keep changing their minds

n There wasn’t enough time

n New skills were required

n How can we modify IS that are not documented?

n We said it couldn’t be done

n The system is fine: the users are the problem

Why things go wrong?

n Quality problems

n Wrong problem addressed

n Wider influences neglected

n Analysis carried out incorrectly

n Project undertaken for wrong reasons

Why things go wrong?

n Productivity problems

n Users change their minds

n External events change environment

n Implementation not feasible

n Poor project control

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TLC with Iteration

Prototyping Life Cycle

Incremental Life Cycle

Spiral model

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Object Oriented Life Cycle

Fountain model

Object Oriented Life Cycle

Recursive/Parallel model

CASE Tools

n Provide automated support to IS

professionals

n Diagram support

n Data dictionary

n Checking mechanisms

n Software construction

n Reverse Engineering/ Maintenance support

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