What is SDLC (Software Development Life Cycle)
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`No knowledge is better than half knowledge`I think to store something in our brain, a story is the best way:
Varun is an aspiring entrepreneur. He is interested in hosting an online store for home decor products like curtains, artwork, home furnishings, etc. He requires a software application that would allow customers to browse the available products at their fingertips and buy them online. Varun, eager to jump into his new business, wanted to understand how the software development process works. To start with his business idea, Varun meets his cousin John, who is a software developer. Varun pitches his idea and asks his cousin to help him design an online business application. John explains to Varun the way of designing the best online shopping application. For thta we need to understand the working of the software development lifecycle, also known as the SDLC.
Definition - The Software Development Life Cycle (SDLC) is a systematic process used by software development teams to design, develop, and deploy high-quality software. . . . . .John start explaining - It involves distinctive phases to initiate the software production based on the client requirements. The six crucial phases of SDLC in designing any software application.
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The development team will commence production after agreeing on the terms and conditions discussed between the client and the development team regarding all the proceedings and requirements. Initiating the production with the
Planning phase
Where the client and the development team will discuss the basic requirements for the software like the purpose of the application, the details about the end user of the product and the overall user interface's design of the software.
Requirement analysis phase
which includes detailed information about each element to design the software. Discussed validating the installation of elements in the application according to the client's requirements. Calibrating the security protocols and performing risk analysis for the software application. All the discussed details are then to be filed in the software requirements specification document, also known as the 'SRS document'
Design phase
The software designers will devise the system design following the SRS document. The system design defines the overall architecture of the software and checks its feasibility with the client's requirements. All the details of the design phase are added to the 'Design Document Specification,' also known as the DDS document, which is then shared with the analysts and stakeholders for review.
The coding or Implementation phase
In the coding phase, the developers start writing the code using the languages they choose for the software development. The coding stage is also one of the most important phases as it encapsulates the implementation of the software product. The developers use predefined guidelines and development tools like compilers and debuggers to implement the code.
Testing phase
The developed software is now deployed in multiple test environments to check the functioning of all the attributes in the software architecture. After the test cases are completed, the quality assurance and testing team may find errors or bugs in the software, which will be forwarded to the developer team for debugging. This testing and debugging process continues until the software is stable and works per the required specifications.
The deployment and maintenance phase
The software application is ready for deployment and consumer use. In this phase, the development team will set up links for the application to make it accessible to the users. After the deployment is completed and users begin using the application, they may encounter an error or a bug in the application, which is to be resolved through maintenance. This process also includes releasing application updates and enhancements for better performance and user experience.
At this point, Varun was surprised by all the effort and steps taken by the development team to design a software application. With John's explanation of the SDLC lifecycle, Varun understood how software is developed. Now, he can actively give feedback to the development team and design the best software application for his online store, and perhaps expand to other businesses.
I hope you found this information informative and helpful
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