Question

In 300 words or more answer the following questons:

1. Which System Development Methodologies (SDLC, Prototyping, RAD, JAD, or Object Oriented) is appropriate to be used for what type of Systems? Hint: Look at characteristics of different systems.

2. What is "Total Cost of Ownership (TCO)" and which of the methodology in question 1 has a better TCO?

Answer 1

ans 1=

1.'RAD'- offers that products can be developed quickly & of superior quality via:

• Utilizing workshops / focus groups for requirement collection.
• Prototyping & testing of the designs.
• Re-utilizing the software parts.
• Following a schedule which postpones design enhancements to a later product version.
• Keeping the review conferences &the team interaction informal.

There are commercial articles which incorporate requirements collection instruments , prototyping instruments, software developmental situations like those for Java platform,testing tools, groupware for interaction among the development team members . Rapid Application Development methodology normally incorporates object-oriented programming method, that inherently promotes software re-utilization.

2.'JAD' -concentrates on the business concern rather than on the technical specifics. It is very applicable for the development of corporate systems, and it can be utilized effectively for systems software also. It generates its savings by lessening the elapsed time needed to collect the system's requirements & by collecting requirements better, hence lessening the number of expensive, downstream requirements modifications. Its effectiveness is based on effectual leadership of the Joint Application Development meetings, on participation by main end-users & developers, & on obtaining group synergy in the Joint Application Development meetings.

3. ‘SDLC’ -is a conceptual framework employed for project management which explains the phases involved in an info system developmental project, from a preliminary viability examination across maintenance of the finished application. Different SDLC methods have been developed in order to guide the procedures involved, like the waterfall model, AD, JAD, the fountain model.