6 Basic SDLC Methodologies: Which One Is Best?

From efficient tool based on quality metrics and defect tracking, best
practices have been helpful to decide the preparedness of a project for great
delivery or stage. You can set the targets and metrics to ensure that the design,
requirement, test plan, code, and other documents and deliverables. Actually,
quality analysts and representatives are leading experts who can audit the
projects on the basis of quality. Along with the software, you also have to work on the document part,
such as project requirements, plan, Low-Level Design, High-Level Design, test
reports, test plans, user documentation, and status reports. Most of the time,
these documents are simply deliverables specified by the stakeholders and
customers. These documents help ensure tracking, understanding of the program
and avoid relying on the development team.

Lean is about only working on what must be worked on at that specific moment. The project team is focused on finding opportunities to eliminate waste, to drop unnecessary things like meetings, and minimising documentation. The difference with the Agile approach in software is the focus on customer satisfaction throughout the entire lifespan of a system. These can be solved during the maintenance phase when the whole system is refined to improve performance, or to meet new requirements. Sometimes staff will need additional training to meet this goal, new procedures must be put in place, or updates must be made. The development phase marks the end of the first stage of the Systems Development Life Cycle (SDLC).

Stage 2: Analyze requirements.

A system development life cycle is similar to a project life cycle. In fact, in many cases, SDLC is considered a phased project model that defines the organizational, personnel, policy, and budgeting constraints of a large scale systems project. So these were some of the best SDLC practices which cover most of
the development projects. When done right, the software development life cycle
enables a great level of documentation and management control. Even better,
developers should have proper knowledge of what to build and why. Everyone
should be agreed on the up-front goal and have clear insight for the goal.

  • Think of “our” SDLC as the secure systems development life cycle; the security is implied.
  • The major goal of an SDLC is to provide cost effective and appropriate enhancements or changes to the information system that meet overall corporate goals.
  • The WBS and all programmatic material should be kept in the “project description” section of the project notebook.[clarification needed] The project manager chooses a WBS format that best describes the project.
  • During this stage, unit testing, integration testing, system testing, acceptance testing are done.
  • You
    can also launch the beta version of the software for select testers so they can
    give feedback and you can make tweaks before you roll out the full version in

Test criteria are met prior to implementation of operational software. This generic SDLC model, designed by the National Computing Center of the United Kingdom in the late 1960s, was described in 1971 by A. Here you can choose which regional hub you wish to view, providing you with the most relevant information we have for your specific region.

Secure Working Practices

Tell us who catches your eye, and we can arrange an interview or placement ASAP. By making access to scientific knowledge simple and affordable, self-development becomes attainable for everyone, including you! Join our learning platform and boost your skills with Toolshero. In short, this phase consists of collecting and interpreting facts, diagnosing issues, and proposing improvements for the system. It is vital to have as diverse a team as possible during this phase. If more people who know and use the system are present, the greater the chances are of finding valuable improvement points.

system development life cycle principles

It means you won’t
have enough money for other areas and you might have to go off budget. As you take your first steps into a software development career, consider potential employers and particular areas of interest. You can specialize in cloud computing system development life cycle principles or mobile app development or become a generalist who is an expert at applying the SDLC across many types of software. Becoming a software developer requires learning the key skills, programming languages, and concepts needed to build software products.

stages of the software development life cycle

These elements describe the system in sufficient detail that developers and engineers can develop and deliver the system with minimal additional input. In systems design, functions and operations are described in detail, including screen layouts, business rules, process diagrams, and other documentation. Modular design reduces complexity and allows the outputs to describe the system as a collection of subsystems. Relevant questions include whether the newly implemented system meets requirements and achieves project goals, whether the system is usable, reliable/available, properly scaled and fault-tolerant. Process checks include review of timelines and expenses, as well as user acceptance.

In this article, we will see all the stages of system development. We will delve into the significance of each stage, emphasizing the critical role played by System Design in the overall process. Project management methods shall be used to control the development process. Most solution providers use the waterfall life cycle approach for software solution development. The waterfall approach (refer Figure 14.3) helps to understand the extent of the residual risks and allows one to work conscientiously toward reducing those risks. At this stage, the nurse will utilize the analysis of the requirements and the financial plan to choose whether the system will be developed or an existing solution can be purchased from a vendor.


Use Smartsheet’s SDLC with Gantt template to get started quickly, and help manage the planning, development, testing, and deployment stages of system development. Create a timeline with milestones and dependencies to track progress, and set up automated alerts to notify you as anything changes. Share your plan with your team and key stakeholders to provide visibility, and assign tasks to individuals to ensure nothing slips through the cracks. In order for the V Model to be effective, the requirements must be well defined and stable, and they must be separated into phases for development and testing. The rigorous testing process ensures that the software meets the needs of stakeholders and end users, so it is also well suited for projects where a high level of quality is required.

system development life cycle principles

Object-oriented methodology is a type of software development method in which the emphasis is put on objects and their applications. The whole model is designed using an object-oriented approach (Sandberg & Crnkovic, 2017). Rational Unified approach is a type of object-oriented methodology. The basic advantage behind this methodology is that it can help reuse software and thus cut down the project’s cost. The most flexible of the SDLC models, the spiral model is similar to the iterative model in its emphasis on repetition.

Quality management and System Development Life Cycle

They did not have a proper concept of what the possibilities would be on the short term. This model is suited for small teams who work to produce a set of features within fixed-time interactions, such as two- to four weeks, called sprints. Let’s walk through the four key elements of a Scrum model as depicted in Fig 10.4. There are a variety of models that are built using Agile methodologies. Lack of control over the system changes due to a working version’s fast turn-around to address users’ issues.

system development life cycle principles

At this stage, the team will work together to devise a set of business goals, requirements, specifications, and any high-level risks that might hinder the project’s success. In most use cases, a system is an IT technology such as hardware and software. Project and program managers typically take part in SDLC, along with system and software engineers, development teams and end-users.

SDLC Principles

Many organizations subdivide their SDLC methodologies into a larger number of phases than the five referenced in NIST guidance, potentially offering closer alignment of SDLC phases and corresponding RMF tasks. Once the themes have been identified then there are predetermined tasks and techniques to finish the project as defined by the approved methodology of the organization. The second theme includes ways to determine the data necessary to produce the logical requirements specified by the organization. The most common data model used is the entity relationship diagram. The nurse-leader will be responsible for the documentation system maintenance, meaning that the candidate will monitor the workflow and ensure that the implemented system suits the requirements of the daily work.