Let’s now look at a list of situations best suited for specific software development models. Technically speaking, the agile model is more of a framework or guideline than a distinct model.

The cycles through which the system is delivered are called sprints. Analysis of the requirements is done to identify potential risks. A risk mitigation strategy is then created to guide the development process. This way, it delivers a system that is not complete but is under constant review. The biggest differentiating aspect though is that it is focused on risk analysis. It is best suited for projects where risk management is critical. This test is done to check whether the system meets all the functional requirements outlined during the functional specification phase.

Information that would be considered sensitive must never be used outside of production environments. This policy also applies to enterprise-wide systems and applications developed by Userflow or on behalf of Userflow for production implementation. This is almost like putting together the architectural plans and interior design of a new house before you build it. Except your architects and designers are your ux/ui team and developers. It might be beneficial to build out this plan in your development tool of choice — commonly Jira, GitHub, or GitLab.

The Evolution Of The System Development Life Cycle

The requirements are defined in this phase to a level of detail sufficient for systems design to proceed. They need to be measurable, testable, and relate to the business need or opportunity identified in the Initiation Phase. The Feasibility Phase is the initial investigation, or brief study of the problem to determine whether the systems project should be pursued. A feasibility study established the context through which the project addresses the requirements expressed in Business Case and investigates the practicality of a proposed solution.

Last-minute improvements are made, which could very well shift the overall focus of the information system toward a more efficient direction. A software development cycle management system works to control and manage each step of the development cycle. Management Systems add transparency to each phase and the project as a whole. They also add analytics, bug-tracking, and work management systems. These metrics or KPI’s can be used to improve parts of the cycle that aren’t running efficiently.

Other Models

As a system development team​ manager, you know that your team needs to be heavy in​ ________ during the design and implementation phase. Another advantage of secure SDLC is it helps build a culture of security that is more likely to catch issues not only in development but in other areas of an organization as well. Developers can begin by educating themselves with the best secure coding practices and frameworks available for better security. They should also consider using automated tools to quickly identify security risks in the code. “Super users” can help in the training process to assist those with less technical experience and understanding.

which of the following is not a phase in the system development life cycle?

Traditionally, the systems-development life cycle consisted of five stages. Increasing the number of steps helped systems analysts to define clearer actions to achieve specific goals. Primary design activities include Design the IT infrastructure, Design system models. Primary development activities include Develop the IT infrastructure. By framing these questions around SDLC he was better able to hone in on his ultimate solution and to build the right tools for the right users. SDLC exists to help you reduce your time to market, ensure a better product output, save money, and increase the likelihood that what you build is useful to the stakeholders that you care about. After the design phase you will start putting “hands on keyboards” and making changes will become more costly in terms of time and money spent.

The Importance Of Each Phase Of The System Development Life Cycle

At this stage, the goal is to deploy the software to the production environment so users can start using the product. However, many organizations choose to move the product through different deployment environments such as a testing or staging environment. This phase involves the use of a quality cloud calendar app assurance team to ensure that everything is functioning as it should. It involves bug fixes, as well as the specific improvements based on the feedback of the QA team. The testing and integration phase is also when most aspects of the program are brought online, one after the other.

  • In this model, the software is developed and delivered through repeated cycles of smaller portions of work.
  • This step puts the project into production by moving the data and components from the old system and placing them in the new system via a direct cutover.
  • The initiation of a system begins when a business need or opportunity is identified.
  • These include being flexible and responding to change over following a plan, and collaborating with stakeholders and customers.
  • The Software Development Life Cycle simply outlines each task required to put together a software application.
  • As each phase completes, the project spills over into the next step.

The tasks and work products for each phase are described in subsequent chapters. Not every project will require that the phases be sequentially executed. Depending upon the size and complexity of the project, phases may be combined or may overlap. COBIT basically states that the application should routinely verify the tasks performed by the software to help ensure data integrity and provide rollback capabilities. As this provides a “Prevent Control,” it may be a requirement to use to evaluate future application and/or interfaces you may need to implement. 6.Project management methods shall be used to control the development process.


Jason works as a systems analyst in an IT firm and is part of a systems development team that is comprised of business analysts, programmers, testers, and so on. He just completed assessing the feasibility of the project and has been asked to move on to the next phase of the systems development life cycle. This stage requires him to work typically with business analysts. Jason is moving to the __________ phase of the systems development life cycle. Once a testable system is created, testing occurs using test scripts. Testing must be linked back to the defined requirements to ensure that they have been met. In addition, testing allows users to identify defects before the system is deployed.

Whichever option they pick, they’ll have to go through a process of planning, surveying and final acquisition. Some of the things to be considered will be warehouse size, distance from the current warehouse and offices, number of new staff required etc. Out of all the bidders, you are the one who proved capable of delivering the best software solution. You share this information with your team and it’s time to celebrate.

What Is System Development Life Cycle Security?

Still, nothing beats a good old-fashioned pre-launch testing session. Get your QA team together to try out the product, log bugs and performance which of the following is not a phase in the system development life cycle? issues, and generally push the code to breaking point. Then, send it back to the developers to fix everything before retesting.

How many phases are there in system development?

Traditionally, the systems-development life cycle consisted of five stages. That has now increased to seven phases. Increasing the number of steps helped systems analysts to define clearer actions to achieve specific goals. Similar to a project life cycle (PLC), the SDLC uses a systems approach to describe a process.

The publication popularized the notion that software projects needed to respond to change quickly and could not be hindered by excessive bureaucracy. DevOps is a best practice that bridges the traditional divide between developers and infrastructure engineers.

This section as it pertains to COBIT deals with design elements of systems developed in-house. However, keep in mind that heavily customized or modified systems may fall in this category from a SOX perspective. 7.Tests should prove that the system complies with all design specifications and any required security measures. 1.Results of software testing must be documented and approved by the IT Manager and the System Owner. 9.All errors shall be tested after correction to ensure that they have been eliminated as part of the regression testing process and that no new ones have been introduced. This might require documenting the risk information needed to address the trust requirements in contracts, service level agreements , or other forms of legal agreements.

Designing the IT infrastructure typically occurs during the design phase. FALSE The assess project feasibility activity typically occurs during the planning phase. Your analytical team just informed you that the results of their feasibility studies exposes weakness in terms of the financial capabilities of the organization. You know that this means that the project did not pass the test for​ ________ feasibility. As a system development team​ manager, you know that your team needs to be heavy in​ ________ during the integrated testing and conversion phase. Often when an organization enters the design​ phase, nobody knows all of the​ __________ that concern a particular feature.

This will help your team to produce organized and consistent code that is easier to understand but also to test during the next phase. ” This stage of the SDLC means getting input from all stakeholders, including customers, salespeople, industry experts, and programmers. Learn the strengths and weaknesses of the current system with improvement as the goal. which of the following is not a phase in the system development life cycle? Following the best practices and/or stages of SDLC ensures the process works in a smooth, efficient, and productive way. Troubleshooting and optimizing your code is easy with integrated errors, logs and code level performance insights. Developing teams may face fatigue when working on projects which require a fast turnaround or long working hours.

Incremental Development

Here, teams meet the goals and outcomes set during the software requirements gathering phase by implementing the solution. Use code scanning tools for static analysis, dynamic analysis, and interactive application security testing. Some documentation remains unchanged throughout the systems life cycle while others evolve continuously during the life cycle. Other documents are revised to reflect the results of analyses performed in later phases.

In this phase of work, a software implementation is packaged and tested to assure quality. Testing or quality assurance ensures the solutions implemented pass the standard for quality and performance. This can involve unit testing, performing integration and end-to-end tests, verification/validation, and reporting or identifying bugs or defects in the software solution. In this stage of work, teams build the software solutions based on the design decisions made.

Phase #1: Requirements Analysis

If the thorough analysis phase ends with a positive outlook for the project, the design phase can begin. The design phase is where the real work starts, and company resources start to fund the project. It is also the phase where the team figures out what the finished product will look like once development is completed, omitting potentially risky design choices along the way. By the end of this phase, the team will know what features it will have, and how its inner workings will be built.


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