SDLC

SDLC 

SDLC

In this model the process execution done in V shape manner. SDLC

It is also known as Verification and validation model. SDLC

It is the extension of waterfall model. SDLC

It follows similar actions, but adds more to it creating a parallel of steps, hence the name V-model. SDLC

For each development phase, there is a testing phase as well. SDLC

SDLC https://www.tracedynamics.com/sdlc

Instead of the stages following a cascade effect, they swoop back up to potentially repeated part of the process. SDLC

After determining the requirements and making sure everyone agrees with and knows what to expect, the designing stage is broken down by system, architectural, and modular designs. SDLC

Testing is done after each to find any possible flaws hiding within the software. SDLC

Coding is completed and the testing stage can begin, but as in the same fashion as the design stage, the testing is broken down. SDLC

It consists of unit, integration, system, and acceptance. SDLC

This breakdown offers multiple trials for the product to give the most chance for issue correction before release, thus possibly pulling it back into the development stages. SDLC

Each testing phase corresponds with one of the development stages to give a more defined process. SDLC

The V-Model does take longer than the Waterfall Model and has many of the same downfalls, but it offers more chances to fix issues earlier on. SDLC

While it is definitely a detailed way to perfect a project, it limits the flexibility of fixing bugs later on. SDLC

In this model the next phase will only start when the previous phase developed and tested thoroughly. SDLC

In this model, there’re Verification phases on one side of the ‘V’ while the validations phases are on the other side. SDLC

The Coding Phase joins both sides of the Model. SDLC

Verification Phases of V Model Includes: SDLC

• Business Requirement Analysis. SDLC
• System Design. SDLC
• Architectural Design. SDLC
• Module Design. SDLC
• Coding Phase. SDLC

Validation Phases of V Model Includes: SDLC

• Unit Testing. SDLC
• Integration Testing. SDLC
• System Testing. SDLC
• Acceptance Testing. SDLC

Applications using V-Model SDLC

• Used for small to medium-sized projects where the requirements defined clearly and fixed. SDLC
• When enough technical resources are on hand with the required technical skills. SDLC

Why you should use V-Model SDLC

• The progress of the project goes systematically. SDLC
• Suitable for small and medium-size projects. SDLC
• Testing will start from the requirement phase. SDLC
• Tracking the progress of the project is easy. SDLC

SDLC

SDLC

The spiral methodology merges the possibility of iterative improvement with some of the controlled parts of the waterfall model. SDLC

This methodology is a fusion of the iterative development model and the waterfall model. SDLC

SDLC

A less costly option is the Spiral Model. SDLC

This combines the Waterfall and the Iterative methods to utilize risk management and is best for projects with difficult and complicated requirements. SDLC

The Spiral Model is great for products that need constant improvement and change. SDLC

This system heavily relies on constant communication between the customer and the SDLC team. SDLC

The idea is that you design and then build the software according to the base requirements, creating a Proof of Concept, or POC, that indicates what changes and alterations need to be made. SDLC

The developers and customer analyze the overall performance, taking note of issues, then the developers start the process over again, fixing those issues and reducing risk. SDLC

With each cycle, the product becomes more refined. SDLC

A significant downside to this model is the potential for the spiral to never end. It requires good management and a good deal of particular record keeping. SDLC

The more it cycles, the more complicated things can get. Of course, this hassle is worth it for projects that are high risk and need an evolving software. SDLC

The spiral model has further divided into different stages. SDLC

• Identification SDLC
• Design SDLC
• Construct and Build SDLC
• Evaluation and Risk Analysis SDLC

• 

  SDLC

Project using this model go ver and over through the above-mentioned phases in iterations ,and that is why known as spiral model. SDLC

Applications using the Spiral Model SDLC 

Applications using the spiral model include when: SDLC

• Requirements are not precise, and they need an assessment to get a  SDLCbetter idea of what the client is expecting. SDLC
• The product releases are required to be frequent. SDLC
• Critical modifications expected during the development of the software product. SDLC
• Medium to high risks projects. SDLC
• Limited budget but risk evaluation must do. SDLC

Reasons to use Spiral Model SDLC

• The early software build is available for the clients. SDLC
• The evolving requirements from clients get accommodated. SDLC
• Monitoring of the project is useful and secure. SDLC
• This model is highly flexible. SDLC

SDLC

SDLC

SDLC

In this model of software development life cycle, the iterative method begins with a simple execution of the small group of the requirements.

Iteratively the versions enhanced until we have a complete system that is all set to implement and deploy.

An iterative life cycle model doesn’t begin with a complete set of requirements by the client, so it is easier to use.

The development process starts by listing the requirements and executing only part of the program or system, which assessed to recognize the further needs of the software.

SDLC

A model that is more suitable for changing needs and bigger products is the Iterative Model.

This one differs from the previously mentioned models by focusing on subsets of the software after the requirements stage and up to the release.

This allows user feedback, a greater ability to find issues during development, and an easier time fixing those issues.

Because the software is being built piece by piece, it does take longer and require higher levels of resources.

It all has to work together and without the skills to accomplish that it would be disastrous.

It essentially requires rewriting the software each time, with more added to it and fixes worked in.

One big benefit is that with each version of the software completed, it gives the customer and users a product they can use, satisfying their needs at a quicker pace while still improving the product.

However, this can also open the product to issues in the overall outcome.

As mentioned previously, it takes a great deal of skill to make sure all the pieces fit together, and even the most skilled may run into an unforeseen problem once all the subsets are finalized.

In the iterative model, modifications made in the system design and some new features during each iteration.

This process continues until complete software is ready according to the client’s requirements.

Applications using Iterative Model

The iterative model used when:

• The system requirements defined and understood clearly.
• The development project is vast.
• The main requirements of the software or system must be well-defined; though, some minor details could add with time.

Why should you use Iterative Model?

• We can easily measure the progress of the project.
• Testing and troubleshooting during smaller iteration is easy.
• Planning of parallel development
• It is readily acceptable to the ever-changing needs of the project.
• Risks recognized and resolved during the iteration.