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SDLC (Software Development Life Cycle)

 What Is SDLC ?

Software development life cycle or software development process is the process used by the industries to produce software which meets the customers expectation with quality assurance, completion within time keeping cost estimates in mind.

The process is just like a plan which helps to describe how to develop, maintain, update, upgrade to next version, alter or enhance a software. There are different stages in this cycle:

1.  Requirement Analysis

2. Planning

3. Architectural Design

4. Software Design 

5. Testing

6. Deployment


1. Planning & Requirement Analysis:

This is the most important stage of the SDLC. In this stage inputs  gathered from the stakeholders, SMEs & domain experts. After gathering the required information planning begins. Planning about quality assurance & risks associated with the project is also calculated during this stage.

After that business analyst & project organizer set up meeting with clients and collect data like what customer wants to build, who will be the end user. Before creating a software core understanding of the product is very important.

2. Defining Requirements:

Once the requirement analysis is done, the next stage is to certainly represent and document the software requirements and get them accepted from the project stakeholders.

3. Designing:

After the planning and requirement analysis, software requirements designing phase begins.

4. Development of the project:

In this stage the actual development begins, and codes were written carefully using tools like compilers, interpreters, debuggers, etc. according to the guidance described by their management.

5. Testing:

After when the code is ready, it is tested to see if it meets the requirements which were gathered in the first stage. Also in this stage different testing like unit testing, system testing, acceptance testing and integration testing are done.

6. Deployment:

When the software is ready & certified, no error or bugs are found then it is deployed in the market.

                                   

Though the software is deployed in the market, when the clients start using the software then the real issues come up and requirements to be solved from time to time. This procedure where the care is taken for the developed product is known as maintenance.

But to develop the software certain models were followed like -

1. Waterfall Model

2. RAD Model

3. Spiral Model

4. V-Model

5. Agile model

6. Iterative Model

7. Incremental Model

8. Big-Bang Model






 

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