Functions, methods and 6 stages of SDLC

Functions, Methods And 6 Stages Of Sdlc

SDLC means life cycle of systems development or in Indonesian it is called life cycle of system development.

SDLC serves to build an information system so that it can operate as expected.

The SDLC consists of several levels, which are often taught in software engineering subjects or systems analysts, consisting of 6 levels, namely:

  • Planning (Planning)
  • Analysis
  • Design (Design)
  • Implementation
  • Testing and integration (testing and integration)
  • Maintenance (maintenance)

In other literature, you can find SDLC, which consists of 3,4,5,6,7 to 10 species.

Each of these stages is used differently, depending on the development technique used later.

Therefore, this will be clearly discussed this time UNDERSTANDING SDLC: Functions, Methods and 6 Levels of SDLC as follows.

Definition of SDLC

SDLC is a cycle used in the design or development of information systems that aim to easily solve problems.

In another sense, SDLC is a work phase that aims to produce a high quality system that meets customer expectations or system goals.

SDLC is a framework that contains the steps to be taken in the software development process.

This system contains a comprehensive plan for developing, maintaining, and replacing specific software.

According to prof. dr. Sri Mulyani, AK, California. (2017) SDLC is a logical process used by a systems analyst to develop an information system that includes requirements, validation, training, and system owners.

Therefore, we can conclude that SDLC is a cycle or stage used in the creation or development of an information system, so that the work of the system is structured, efficient and in line with expected goals.

SDLC functions

Without optimal design, it is quite difficult to create software.

To date, more and more software development techniques are being developed.

There is still a lot of discussion about the best and most appropriate method in all types of software.

Still, it’s better to plan than not plan at all.

Viewed from many angles, SDLC has various functions, including as a means of communication between the development team and stakeholders.

SDLC also works by clearly dividing roles and responsibilities between developers, designers, business analysts and project managers.

Another feature of SDLC is that it can easily provide an overview of input and output from one stage to the next.

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SDLC phase

SDLC contains stages that are made for a specific purpose. Here are 7 steps to take.

1. Phases of system analysis

The first phase is system analysis. At this stage, the system will be analyzed to see how it can be implemented later.

The results of the analysis are in the form of advantages and disadvantages of the system, system functions, up to updates that can be applied.

This part is included in the planning section and other sections are included in planning, namely resource allocation, capacity planning, project planning, cost estimation and determination.

Thus, the results of the planning phase are project plans, schedules, cost estimates, and reservations. Ideally, project managers and developers can work optimally at this stage.

2. System design phases

Once the requirements are understood, designers and developers can begin designing the software.

This phase produces a prototype and several other results, such as documents containing the plans, samples, and components needed to carry out the project.

According to the specifications, the design of the system is carried out as the next stage.

This stage is the stage where all the results of the analysis and discussion of the system specifications are used as a plan or a plan for the system.

This phase is known as the plan, where the system is ready for development, starting from implementation, system analysis to support staff for system development.

3. System development phase

System development is the stage when planning begins to work, create or implement into a complete and usable system.

This phase takes a long time, as new obstacles emerge that could hinder the development of the system.

At this stage, the design may change at any time for one or more reasons.

The next stage is software development in the development process.

Depending on the methodology used, this phase can be carried out quickly.

The result produced at this stage is software that is functional and ready for testing.

4. System testing phase

Once the system is developed, the system must undergo testing before it can be used or marketed.

The testing phase of the system should be started to test whether the created system works optimally or not.

Several things need to be considered at this stage, such as ease of use to achieve the objectives of the system that has been prepared since the design of the system being implemented.

If an error occurs, the first to fourth stages need to be updated, refurbished or refurbished.

The SDLC test phase is the most important part of the software development series.

Because the application will not be able to be published without prior testing.

There are several stages of testing that need to be performed, including code quality, functional tests, integration tests, performance tests, and security tests.

To ensure that the test runs as expected and that no part is missed, you can run the tests with continuous integration tools such as Codeship.

From this phase, software will be produced that has been tested and prepared for distribution in the production process.

5. Implementation

Implementation and maintenance are the final stages of SDLC production.

At this stage, the system was created, tested and certified to work optimally.

After the completion of the production phase, the user performs the implementation and maintenance.

Maintenance is important to ensure that the system can operate optimally at all times.

The following steps are required for implementation.

  • Conduct research and assess the feasibility of the created system.
  • Analyze and study existing and operating systems.
  • Perform system development troubleshooting.
  • Determine the use of appropriate hardware and software.
  • Design and develop new systems.
  • Maintain and improve the new system as needed.

This phase is called the deployment phase, and at this stage the software is installed following a process that involves a lot of manual approvals.

This phase is performed before the software is released to the production department, and the deployment process can be performed using application issuance automation (ARA) prior to entering the production process.

The result of this phase is software that is ready for mass production.

6. System maintenance

The maintenance of system b is very important for further use, where maintenance is the last phase, which becomes the beginning of a new phase, namely use.

The SDLC is not yet complete at this stage, so the resulting software needs to be monitored to ensure that it is working flawlessly.

Damage found in this production process must be reported and remedied.

Discovering it before they started mass-producing it would be better than finishing up renovating everything from start to finish.

SDLC development model

The development model is very important to help in the software development process.

There are several models of SDLC development, followed by various organizations, such as:

1. Waterfall model

A model that involves the complete completion of one level before moving on to the next level.

Once one phase is completed, an assessment is made to ensure that the project is running according to plan and that it is feasible to proceed to the next phase.

The waterfall model, called the classic model, has several main stages, such as systems analysis and engineering, design, program writing, testing, and maintenance.

2. V-shaped model

This model focuses on the implementation process in a sequential manner and is almost identical to the waterfall model, but emphasizes the testing phase.

The test procedures on this model are written before the program code is generated.

3. Incremental model

The model includes several development cycles, where these cycles are divided into small iterations.

Iteration is easy to manage and goes through several stages, including setup, design, deployment, and testing.

Also read: PROTOTYPE METHOD: advantages, disadvantages and 6 stages of the model

Conclusion

SDLC means life cycle of systems development or in Indonesian it is called life cycle of system development.

SDLC is a cycle or stage used in the design or development of an information system so that the work of the system is structured, efficient and in line with expected objectives.

SDLC serves to build an information system so that it can operate as expected.

The SDLC consists of several stages, namely:

  • Planning (Planning)
  • Analysis
  • Design (Design)
  • Implementation
  • Testing and integration (testing and integration)
  • Maintenance (maintenance)

So it can be said UNDERSTANDING SDLC: Functions, Methods and 6 Levels of SDLC they become important things that should be known to certain customers.

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