Software development life cycle is a process which cannot be taken all at once; there are varied phases involved that are addressed by the developer. All these phases are important for the owners of a software company, who want to keep a tab on the progress of software they want to get developed. The software development professionals touch base with 6 major phases before actually come up with application featuring the pre-stated specifications.
The entire cycle comprises well-thought steps and procedures, starting from its inception till its implementation. The process is implemented on different numerous types of SDLC models namely Waterfall and Agile as per the requirements.
Below listed are the key phases involved in SDLC:
Requirement Gathering and Analysis
As the name indicates, it is the phase in which developers carry out detailed research with clients to know and record their requirements. The first stage of SDLC model, it is also known as the brainstorming phase and comprises numerous sub-stages encompassing Feasibility Analysis. Such analysis is done to check the possibility as how much the idea is probable to put into action.
The requirements and scope varies in case any existing software is being modified. Herein, a detailed study is carried out to understand the underlying problem persistent in the software which is then sorted out followed by discovering ways to solve it. On the contrary, if software is being developed from the scratch, then each aspect is considered in detail before it is committed to be put into action. Developers then carry out maximum research after taking the inputs from the end customer.
This is defined as the second phase of SDLC in which the entire process is mentioned in detail. It involves drafting a detailed blueprint encompassing a list of procedures. If the entire process looks complicated, the system can also be divided into smaller parts to make it more understandable and easier for developers, testers, designers, project managers and other professionals who will take up the work in the later stages.
This is the third stage, wherein developers take into account the blueprint and a logical design is made System Analysts. In this phase, the analysts and designers work in collaboration and use certain tools to create the design with the desirable output.
Once the design is developed, the software developers take up the challenging task of coding with precision. Each application development company has a specific set of professionals working in this domain as this job requires high attention to detail and is prone to record major number of mistakes.
Often, it is sub-divided into parts, where each developer handles specific part of the work after assessing his/her skill(s). It is a more strategic way to complete the coding job efficiently.
No application is passed onto the customers for evaluation or approval until it is tested thoroughly. Once the software is ready, it is allotted to the specific testing department where a series of Quality Analysts tests are conducted on the application. Herein, different errors are spotted and done away with the help of varied test cases. These applications are tested in two ways, either manually or using automated testing tools in order to ascertain that every component works fine. Once QA certifies that the software is free of errors, it reaches the next stage for implementation.
Final stage of any SDLC, software is made to run on various systems by real time users to check the performance. Once its performance is trusted to be smooth, it is sent for implementation.