What is SDLC? An interesting secret about the software development life cycle

By | December 7, 2020
  1. What are activities in the software development lifecycle?

In the process of developing software, you need to perform the following specific tasks:

3.1. Collect and analyze requirements

The requirements are the first stage in the SDLC process. It is conducted by senior team members with input from all stakeholders and domain experts in the industry. Planning for the quality assurance requirements and identifying risks involved is also performed during this phase.

At this stage it helps to give a clearer picture of the overall scope of the project and issues, the associations and event directives that have triggered the project. Ask to gather the team phase to get detailed and precise requirements. This helps companies refine the timeline needed to complete the work of that system.

3.2. Feasibility study

Once the requirements analysis phase is completed, the next step is to identify and document software needs. This is done with the help of the ‘Software Requirements Specification’ document also known as ‘SRS’ documentation. It includes everything that needs to be designed and developed in the project lifecycle.

To feasibility check you can check with the following 5 categories:

+ Economic test

+ Legal check

+ Check the feasibility of the activity

+ Technical check

+ Check on schedule

3.3. Design

During this stage the software and system design documents are prepared according to the requirements specification document, which helps you to define the overall system architecture. This design phase serves as the input to the next phase of the SDLC model. At this stage two types of design documents were developed as follows:

High-level design – HLD: Brief description and name of each module, an outline of the function of each module, interface relationships and dependencies between modules, base tables Identified data along with their main elements, complete architectural diagrams with technological details.

Low-level design: The functional logic of the module, the database table, including the type and size, the full details of the interface, solving all kinds of dependencies, list of information. error, complete input and output for all modules.

3.4. Encode

When the system design phase is over, the next stage is coding. During this phase, developers begin to build entire systems by writing code in the chosen programming language. During the coding phase, the tasks are divided into units or modules and assigned to different developers. In the software development lifecycle, coding is the longest stage.

During this phase, the Developer needs to follow some predefined coding principles. They also need to use programming tools such as compilers, interpreters, and debugger to generate and deploy code.

3.5. Test

When the software is completed and it is deployed in a test environment. The test team begins to test the functionality of the entire system. This is done to verify that the entire application works according to customer requirements.

During this stage, the QA and testing team may find some bugs / bugs they communicate with developers. The development team fixes the error and sends it back to QA for checking again. This process continues until the software is error free, stable, and works according to the business needs of that system.

3.6. Installation and deployment operations

When the software testing phase is over and there are no bugs or errors in the system, the final deployment begins. Based on the feedback provided by the project manager, the software is finally released and check for implementation issues if any.

3.7. Maintenance Operations

Once the system is deployed and the customer starts using the developed system, the following 3 activities occur:

+ Bug fixes – bugs reported due to some unchecked scenarios

+ Upgrading – Upgrade the application to newer Software versions

+ Improvements – Add some new features to existing software

The main focus of this SDLC phase is to ensure that demand continues to be met, and the system continues to comply with the specifications mentioned in the first phase.

Developers are now responsible for more and more steps of the entire development process. We also see the value of the left shift. When development teams and Ops use the same set of tools to track performance and fix defects from inception through retirement of an application, this provides a common and transfer language, faster between groups. APM tools can be used in development, QA, and production. This keeps everyone using the same toolkit throughout the entire development lifecycle.

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