1. kareRCIserIsviFIsaRsþGnuvtþKMerag
Chapter 4
kareRCIserIsviFIsaRsþGnuvtþKMerag
Selection Of An Appropriate Project Approach

2. CHOOSING TECHNOLOGIES
The development of software in-house suggests that the project has certain characteristics:
the project team and the users belong to the same organization;
the project being considered slot into a portfolio of existing computer-based system;
the methodologies and technologies to be used are not selected by the project manager, but are dictated by local standards.

3. An outcome of project analysis will be the selection of the most appropriate methodologies and technologies.

4. Methodologies
Waterfall Method
V-process Model
RAD
Spiral Model

5. Waterfall Method Also known as the Traditional method
There is a sequence of activities working from top to bottom.

6. Waterfall Method (con’t)
Advantages:
Shorter development time
Cost possible
Drawbacks:
System limitations not being discovered until later in the development cycle
Clients not being able to see the product until its is completely finished.

7. Feasibility study
User
requirements
Analysis
System design
Program design
coding
Testing
operation

8. V-process Model
The V-process can be seen as expanding the testing activities in the waterfall model.

10. V-Process Method (con’t)
Advantages:
Customer more satisfaction
Increased quality
Drawbacks:
More time
More resources

11. RAPID APPLICATION DEVELOPMENT
Customers of IT are concerned with getting working business applications delivered quickly and at less cost.
A response to this has been Rapid Application Development (RAD).

12. Team #1
Team #2
Team #3
Business
Modeling
Business
Modeling
Business
Modeling
Data
Modeling
Data
Modeling
Data
Modeling
Process
Modeling
Process
Modeling
Process
Modeling
Application
Generation
Application
Generation
Application
Generation
Testing
and
Turnover
Testing
and
Turnover
Testing
and
Turnover

13. RAD (con’t) Advantages: Drawbacks: Increased speed of development
Increased quality
Drawbacks:
Reduced scalability
Reduced feature
Need more resources

14. Spiral Model
Is a software development process combining elements of both design and prototyping in stages.
Risk analysis
Engineering-Design
Construction
Planning
Customer Communication
Customer Evaluation

15. Spiral (con’t) Advantages: Drawbacks: Increased quality Less risks
Complexity
It is a new model