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Software Development: A complete Process for software creation

software development

The development of the software process includes programming, designing, testing, documenting and fixing the bug. These kinds of the process take part in the development of the software. And help to create the framework. Source code is the most important factor in software development. Basically, it is a process of writing the error-free source code. The development of software is not a single step process it involves a complete life-cycle of software development. In this blog post, we will discuss the complete software development process.

In another way we can understand this, In computer science, we learn how we can develop a complete software without having any other in it. We have discussed in this blog that software development is not a single step process. Also, the modern process of software development can be described as, it is a process that includes methodologies such as prototyping, waterfall, spiral development, rapid application development and extreme programming.

In a more specific way, we can say the development of software follows several kinds of methodology. And we can use any of them to develop error-free software. For example, we can say, there are specific software development activities which follow the spiral life cycle models.
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History

We can shorten the term software development methodology as an SDM. We never emerged any framework until the 1960s. According to Elliott, we can say the system development life is one of the old methodology frameworks that help to build information systems. The main focus of the software development life cycle has been to construct and develop the information system in a constructive way.

The final system has to be carried out frequently. And very rapidly so that it could use in the context of the Framework which is going to be applied. Hence we can say, the main focus and target of this methodology framework to develop such large scale business conglomerates. The activities include an information system revolve around large processing data and number of rooting which follows crunching.

The processes, methodologies and frameworks use to extend from those steps that can be used by the organisation for regular basis. For developing the flexible framework which is use in the organisation to generate the steps tailored for fulfilling the needs of specific group and projects. In some cases, the set of documents describe the process is distributed by the sponsor or maintenance organization. For specific examples that include

Development of software technology over time

1970s

  • First of all the structured programming take place in 1969
  • SDM stands for System Development Methodology. Cap Gemini SDM, originally drived from PANDATA. It was the first English translation which published in 1974.

1980s

  • The development of the Structured systems analysis and design method started from 1980
  • It was the time when information requirement analysis and soft systems methodology was developed and started.

1990s

  • The jack of all trade in the sector of programming, Object-oriented programming developed in the early 1960s. Became a most famous and dominant programming approach during the mid-1990s.
  • This era was famous for its exceptional growth in application development.
  • In 1994 the we started using Dynamic systems development method for software development process.
  • We started using extreme programming since 1999. And it was the revolutionary change in the software industry that made a significant changes.

Activities involve in software development life cycle ;

In the software development process,  before developing any software its follows the complete life-cycle. In which it goes through several stages which we will discuss in this blog post. Software development life cycle followed by the coworker and developing teams of the software department in the organisation. It consists of a complete structural process also a detailed planning strategy. By which we develop computer software.  The complete structure of software development also includes the maintenance and requirement of the software while its creation time. The process of software development life cycle can be understood as the software development process.

Finally, we can say the software development life cycle is a Framework which defined every task which should be performed during the software development process.  It consists of every possible way by which we can create software.
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SDLC consists of following activities:

Software development life cycle consists many activities while development of software which are listed below;

Planning

It is one of the most important factors that are essential for the development of any software. And it is known by the term planning. The planning process consists of the arrangement and requirement analysis by which we gather and collect information from the clients. In this phase, a software engineer in the organisation gathers every single detail that can be used in the planning. Without proper planning, it is difficult to create or construct such a program that could fulfil the client’s requirement. Once the requirement is collected from the client ends. Now it’s time to make a proper documentation-by which we can determine the scope of the project.

Planning strategy with example

we can understand the planning process in a more detailed way, for example, Project manager and business analyst set up a meeting with the customers. And arrange all the information from their end. They gather all the information like what is the purpose of the project? Before building a product or any software. Because it’s very important to know everything about the product. For Example, Assume a customer wants a software for banking security and online transaction. In such a case, he will discuss all his requirements to the developer. And tell him what kind of facility he wants. After gathering all the information the developer tries to fulfil all the requirements of the customer. And check the product on behalf of its feasibility. Now after complete understanding of the requirements, its time to SRS documentation.

What is SRS?

The SRS stands for software requirement specification. And with the help of this, we create a document. This document should be easily understood by the developers of the software and it should be reviewed by the customer for a long time or future reference.

Implementation

Once the planning phase is successfully accomplished. Now the second phase takes place which is known as implementation. In the software development life cycle, and in this phase the software engineer uses to write code for the software according to the client’s requirements. And try to fulfil every single requirement of their clients.

Implementation processes also play a vital role in the development of software. Because in this stage we finally implement the idea that we are going to use in the software. Implementation/Coding starts once the developer gets the Design document. The Software design is translated into the source code. All the components of the software are implemented in this phase.

Testing

It is a process in which we try to make our software free from any error. It is a possibility that any kind of error can occur during the software development life cycle. To overcome such situation we implement this testing phase. And make our software free from any bug and error.  It is the most important phase of the software development life cycle which help us to find any error in the software.  With the help of this, we make sure that there are no issues in our software.
Testing starts once the coding is complete and the modules are released for testing. In this phase, the developed software is tested thoroughly and any defects found are assigned to developers to get them fixed. Retesting, regression testing is done until the point at which the software is as per the customer’s expectation. Testers refer SRS document to make sure that the software is as per the customer’s standard.

Documentation

Once the testing phase is successfully accomplished now it’s time to the documentation of every step that involves in the project development.  This documentation process is necessary because it can be used for future preferences. And with the help of this process, we improve the software creation and development process.  This process includes an application programming interface which means the design and documentation involved in this stage.

Deployment

Once the documentation is done now it’s time for deployment of the software. the software is deployed once it gets approval for release.

Maintenance

The final stage of software development life cycle is maintenance. In this phase the software interface is used for future reference. After the deployment of a product on the production environment we maintain the product. And if any issue comes up and needs to be fixed or any enhancement is to be done is taken care by the developers.

We have several software development models by which we can proceed in the software development life cycle. And it is followed by various organisations.

Waterfall Model

One of the most famous models is the Waterfall model. This model includes each and every step. And we should finish completely before merging the next one. And once the each and every phase proceeds successfully it is reviewed to check every possibility. If the project is working on its track and whether it is feasible to continue or not.

V-Shaped Model

V-shaped model work on the sequential manner of execution. And this model check focus on the execution of all processes in a very constructive and sequential way. It is quite similar to the Waterfall model but it includes the most important procedure that is known as testing. This way for procedure head to make software free from any error.

Incremental Model

The incremental model includes multiple development cycles. And these cycles are divided into subcategories and smaller iteration. This kind of iteration can be easily managed. And follows the set of requirements design testing and implementation.  This model helps us to produce a working version of the software during the first iteration. Hence we can say with the help of this model we can easily create software in the development process.

Approaches

There are several software development approaches which we are using since the origin of the technology. It can be categories into two main categories. These approaches are generally a combination of several approaches. And it is chosen by the development and management team.

If we talk about the traditional methodologies for software development, we will get to know about the waterfall modal. This waterfall modal has multiple phases and after following each and every phase we develop the software. This complete process of software development is known as the software development life cycle. The waterfall modal contains design, construction and deployment of the several pieces. And these different pieces can occur simultaneously.

Waterfall development

With the help of the waterfall modal, we can represent the activities involved in the software development modal. There are many other models we have that can be used for representing the development process.

Hence, the waterfall modal is a kind of sequential approach to development. In which, the development process is represented as a downward flow of activities like a waterfall.

Steps involve in the waterfall development;

  • The waterfall modal consist of requirements analysis for software specification.
  • Software design is the second phase of the waterfall modal.
  • After a successful design, we require Implementation and this phase is known as the implementation phase.
  • Testing is a process which takes place after the implementation phase.
  • Integration helps to merge subsystem in one single unit.
  • The deployment is also known as Installation and it is the most important part of this waterfall.
  • After installation the last part is maintenance. With the help of this, we can secure the system.

Winston W. Royce in 1970 published an article related to this topic. But he did not use the term waterfall for the software development process. He explained this process briefly in his article.

The basic principal are given below;

  • First of all, divide the project into a sequential phase. It uses some splash-back and overlap between phases. Emphasis is helped to plan, provide scheduling of time, target dates. And provide a facility for implementation so that we could set up a whole system at one time.

Prototyping

During software development, software prototyping work as an approach of activities. And the creation of prototypes, for example, incomplete version of the software program being developed in this phase.

The basic principles of prototyping are given below:

It is a complete development methodology which handles and provide an approach. As we have a lot of traditional development methodology. for example, we have rapid, spiral, incremental modal for software development.

It helps to minimize the risk associated with the project. It breaks the projects into several segments. And provide better ease of change during project development. In this process user involve throughout the development process. And it increases the user’s acceptance of the final implementation.
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