Monday, 18 June 2012

SDLC:- Waterfall Model ( A Leaner Apporach for Designing )

As per our prior knowledge , Software development Life Cycle (SDLC) is the backbone of software development.Its part of systems engineering, information systems and software engineering, is a process of creating or altering information systems, and the models and methodologies that people use to develop these systems , means the every process involves with software development must follow SDLC for every organization.

On the other hand PCL,for project management defined both with a project life cycle (PLC) and an SDLC. According to Taylor (2004) "the project life cycle encompasses all the activities of the project, while the systems development life cycle focuses on realizing the product requirements"

As per my view SDLC is the best fundamental for software development.
There may be so many methodologies are there, but out of all there are finger count methodologies like Prototype Approach, Waterfall Approach,etc. The waterfall apporach is a linear approach. This approach or model has many advantages & Disadvantages, but it is quite popular & acceptable.The initial startup name of this model was Process Model and it has been accepted by many software engineering firms & authors. It ensure the software development process with different phases :-

1. Conception
2. Initiation
3. Analysis
4. Design
5. Coding
6. Testing
7. Implementation and Maintenance.
These all stages/phases are the vital part of this model. And these stages are the key concept of the entire software development.
The word conception , is self meaning word. An idea for create a project/application.
To implement your ideas or to initialize your Ideas/Conception for start up.
To analysis the data/requirements for the project/application.
To build the concrete of the above points to make an application/project.
Applying your construction code/logic for physical structure.
Test the application/project for make it accurate or bug free.( ie. unit test,inte. test)
To implement  the final product and keep maintenance for that product.Its a long term process .

There are so many development process we are following now-a-days. Because, we need fast & quick delivery, so that we a accepting so many techniques like AGILE,xp,SCRUM etc. Many authors argue on this waterfall model due to lack of fastness or other few disadvantages.
But still its the parent of all design & development models are used now-a-days. For more about Agile  read other posts.

By Manoj