What is Software Development Lifecycle?
The “Software Development Life Cycle” improves the accuracy and reliability of each step of the life cycle, providing a strategy for measuring each phase of software development. The SDLC process aims to design software that is of good quality and that satisfies customer needs. The experts should complete the framework within the specified period and the budget. SDLC is a comprehensive schedule that outlines the steps necessary to plan, develop, and manage applications. Moreover, Each stage of the SDLC has its processes and deliverables that feed into the next phase. SDLC is an acronym for Software Development Life Cycle.
Why is SDLC important for Development?
The following are the primary factors why SDLC is critical when designing a software system.
- Enhances the customer relationships
- Assists you in reducing project risk and scheduling overhead
- Serves as a foundation for organizing, arranging, and forecasting projects
- Establishes a structure for the execution of a standardized collection of tasks and deliverables
- Serves as a monitoring and control system for projects
- Also increases the exposure of project preparation among all development process stakeholders
- Accelerates the growth as well
Phases of Software Development Lifecycle
Initial Phase Planning
Software Development Lifecycle: Planning
This step is used to obtain business prerequisites. This stage is the focal point of activity for project managers and investors. Meaning the stage includes meetings with managers, associates, and customers to settle on requirements such as using the system. How would they use the framework? What detail should be used in the framework? What information should the framework provide? In fact, there are general inquiries at the stage of collecting prerequisites.
Finally, we develop a Requirement Specification manual to reference the model’s next step.
The document includes the following information:
- Detailed Specification of Functional Requirements
- Specification of business requirements
- Detailed Specification of Client/Customer Requirements
- Specifying User Requirements
- Documentation for the Business Design
- Business Document
The analysis process includes the feasibility review, preliminary preparation, technology selection, and analysis phase.
For instance, System Analyst (SA), Project Manager (PM), and Team Manager are examples of people who work in this sector.
What happens during the analysis phase?
Feasibility study: This is a thorough examination of the conditions to determine whether or not they are all feasible.
Preliminary preparation: Resource planning and time planning are components of this stage.
Technology selection: This section would analyze and also list all the innovations required to complete the project effectively.
Analysis phase: Specifications, such as human capital, hardware, and applications that are complete this project effectively, will be thoroughly examined and outlined here.
Design Process of Software Development
The design phase consists of two main tasks:
i. LLD (Low-Level Designing)
ii. HLD (High-Level Designing)
How does the design process work?
The chief engineer will divide the whole project into modules by drawing several diagrams, and then the technical lead will divide each module into submodules (Unified Modelling Language).
Developers begin building the whole framework during this process by writing code in the programming language of their choice. The coding procedure splits tasks into groups or modules and allocates them to different developers.
During this process, the developer must comply with a set of predefined coding guidelines. Moreover, they will need to use programming resources like compiler, interpreters, debugger to produce and execute the code.
- The software tester should collect and review the necessary documents to clarify the requirements thoroughly.
- If they have some objections to your interpretation of the guidelines, you should produce a review report (RR) detailing your concerns.
- After receiving clarifications and fully comprehending the criteria, they would use the test case template to write the test cases. They will run the test cases until the build is published.
- After executions, they would log any flaws discovered in a fault profile document.
- They would forward the defect profile to the developers and wait for the next build.
- They will rerun the test cases before the next build is accessible.
- You will replicate the next stage until the product is faultless if they find any of the faults. You will stop the process before you are sure the material is free from defects.
- It applies to different testing methodologies.
Delivery and Maintenance Phase:
The professional test engineers and deployment engineers, install the program into the client setting, following the guidance’s deployment document.
After delivery, it will be classified as a task-based problem if a difficulty arises. Thus the department will assign the associated roles. Roles, processes, and solutions will be specified concerning the problem.
Project: Streaming App
Planning: The client wants to build a multi-device streaming software that is always running for consumers to use (phones, tablets, OCs, laptops, TVs, and gaming consoles).
Analysis: In order to save expenses and improve productivity, the dev team proposes to focus on Backbone.js. There are additional features to the client to improve the app’s user experience (stream purchasing after its passing). The development team goes to work after the client’s permission.
Design: These specific requirements provide the team with the opportunity to work quickly and effectively, resulting in the delivery of the software ahead of schedule.
Testing: The quality assurance team has more time for testing since the core work finishes early. While we were investigating this issue, it became apparent that the app’s database did not accept users with similar first and last names. When the issue is reported to the development team, they get it repaired in a timely manner.
Delivery and Deployment: The client is happy with the outcome but asks for a UI color change because of the company’s rebranding efforts. The last tweaks are done, and the app is put into production.
Maintenance: The customer has declined any help.
To summarize, the Software Development Life Cycle, which is used by all of the world’s leading software development firms. It is critical for all involved from the programmer to the project manager. It is important throughout the product’s development phase. Moreover, it illustrates how to create, manage, and replace specific software by defining each phase in the software development process. The life cycle concept contributes to the overall essence of programming and the growth cycle.