Software of Life Cycle: Everything You Need to Know
Software of Life Cycle Write for Us: The development process (or software life cycle), which at first might seem like a simple task, consists of a series of mandatory steps that seek to ensure that the programs created are efficient, reliable, safe, and respond to the needs of the end users.
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What is the software for the life cycle
The software development life cycle (also known as SDLC or Systems Development Life Cycle ) contemplates the critical phases to validate the software development and thus guarantee that it meets the requirements for the application and verification of the development procedures, ensuring that the methods used are appropriate.
Its origin is that it is costly to rectify the possible errors detected late in the implementation phase. Using appropriate methodologies, it could be seen in time so that developers can focus on software quality, meeting deadlines, and associated costs.
Although there are different software development cycles, the ISO/IEC/IEEE 12207:2017 standard establishes:
“A common framework for software of life cycles processes, which is well-defined language, to which the software industry can discuss. It contains many methods, activities, and tasks appropriate during the acquisition, supply, development, operation, maintenance, or disposal of computer systems, products, and services. These life cycle processes are carried out through the participation of stakeholders, with the ultimate goal of achieving customer satisfaction.
Software development phases
The methodology for software development is a systematic way of carrying out, managing, and administering a project to carry it out with great possibilities of success. This systematization indicates how a project is divided into smaller modules to standardize its management.
Thus, a methodology for software development is the process to follow in devising, implementing systematically, and maintaining a software product from the moment the need arises until the objective for which it was created is fulfilled.
In this way, the stages of software development are as follows:
Before starting any information system development project, it is necessary to carry out specific tasks that will decisively influence success. These tasks are recognized as a fuzzy- front-end of this project since they are not issued to deadlines.
Some of the tasks in this point include activities such as determining the scope of the project, carrying out a feasibility study, analyzing the associated risks, estimating the cost of the project, planning time, and allocating resources to the different project stages.
Of course, you have to figure out what precisely the software has to do with it. Therefore, the analyzing stage in the software of life cycle corresponds to the process through which one tries to discover what is needed and arrives at an adequate understanding of the system requirements (the characteristics that the system must have). Own).
Here In this phase, possible implementation options for the software to be built are studied, as well as deciding on its general structure. Design is a stage that can be processed and must be carried out iteratively.
It is possible that the initial solution is not the most suitable, so in this case, it must be refined. However, there are handy design pattern catalogs that collect mistakes that others have made so as not to fall into the same trap.
In this phase, it is necessary to choose the appropriate tools, a development environment that facilitates the work, and a proper programming language for the type of software to be built. This choice will depend on both the design decisions made and the environment in which the software must function.
When programming, try to make sure that the code is not indecipherable by following different guidelines such as the following:
- Avoid unstructured control blocks.
- Correctly identify the variables and their scope.
- Choose algorithms and data structures suitable for the problem.
- Keep the application logic as simple as possible.
- Properly document and comment on program code.
- Facilitate the visual interpretation of the code using code format rules previously agreed upon by the development team.
It is also necessary to consider the acquisition of resources needed for the software to work, in addition to developing test cases to verify its operation as it is programmed.
Since it is human to err, the testing phase of the software life cycle seeks to detect the mistakes made in the previous stages to correct them. Ideally, of course, please do so before the end user encounters them. A test is said to be successful if any errors are detected.
Installation or Deployment
The next phase is to put the software into operation, so the environment must be planned, taking into account the existing dependencies between the different components of the same.
There may be components that work correctly separately, but when combined, they cause problems. Therefore, it is necessary to use known combinations that do not cause compatibility problems.
Use and Maintenance
It is the most crucial stage of the software development life cycle. Since the software neither breaks nor wears out with use, its maintenance includes three different points:
- Eliminate defects detected during their useful life (corrective maintenance).
- Adapt it to new needs (adaptive maintenance).
- Add new functionalities (perfective maintenance).
Although it sounds contradictory, the better the software, the more time you have to invest in its maintenance; the main reason is that it will be use more (even in ways that were not anticipate), and therefore there will be more proposals for improvements.
Software life Cycle Models
To facilitate a standard methodology between the client and the software company, the life cycle models (or software development paradigms such as object-orient programming ) have been updated to capture the development stages involve and the documentation necessary so that each phase is validate before continuing with the next.
In the waterfall life cycle model, the previous phases will linearly work one after the other. In this way, only when a phase ends can you continue with the next one, and so on progressively.
This model guides the software development process in iterations. Thus, it cyclically projects the development process was repeating each step after each cycle in the software life cycle process.
The twisting model is a combination of the previous models where risk is considered. In this way, you begin by setting the goals and limitations at the beginning of each repetition. In the next stage, the software’s prototype models are create, including the risk analysis. A standard model is then use to build the software, and the plan for the next iteration is prepare.
Model in V
One of the big problems with the waterfall model is that you only go to the next phase if the previous one is complete, and you cannot go back if there are errors in the later stages. Thus, the V-model gives more software evaluation options at each location.
In each phase, the test plan and test cases are create to verify and validate the product against the test requirements. In this way, verification and validation go in parallel.
Big Bang Model
This is probably the simplest model, as it requires little planning, a lot of programming, and a lot of funding. This model has as its central concept the creation of the universe; thus, if funds and programming are put together, the best software product is achieve.
Solutions for Software Development Life Cycles
Continuous integration and development (CI/CD) incorporate continuous automation and permanent control of the software life cycle. A set of practices supported by DevOps in Azure, a service that, of course, we offer at Intelequia.
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