Such is the effect of this revolution that pretty much every student you come across will have a mobile phone. Students are using mobiles in colleges, high schools, middle schools, and even elementary schools. Kids as young as 10 years are being gifted Mobile phones.
In this model software testing starts only after the development is complete. In waterfall model phases do not overlap. They are briefly explained below. Let us understand the concept of Waterfall model with example of a banking application for illustrating the topic.
|Skip links||Schools and colleges have different rules about cell phone use and possession during school hours, with the majority agreeing that they must be turned during class or banned from school all together to prevent them being a distraction. This is an ongoing debate because there are some benefits of students carrying cell phones when they are at school.|
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|Person critical to getting ahead in the workplace||Branchless banking and Contactless payment In many countries, mobile phones are used to provide mobile banking services, which may include the ability to transfer cash payments by secure SMS text message. Kenya's M-PESA mobile banking service, for example, allows customers of the mobile phone operator Safaricom to hold cash balances which are recorded on their SIM cards.|
Requirements Gathering and Analysis In this phase the requirements are gathered by the business analyst and they are analyzed by the team. Requirements are documented during this phase and clarifications can be sought. The Business Analysts document the requirement based on their discussion with the customer.
Going through the requirements and analyzing them has revealed that the project team needs answers to the following questions which were not covered in the requirements document — Will the new banking application be used in more than one country?
Do we have to support multiple languages? How many users are expected to use the application? It is decided that the banking application needs to have redundant backup and failover capabilities such that system is accessible at all times. Implementation The development team works on coding the project.
Since the application is a banking application and security was a high priority in the application requirements, they implement several security checks, audit logging features in the application.
They also perform several other activities like a senior developer reviewing the other developers code for any issues. Some developers perform static analysis of the code.
Testing The testing team tests the complete application and identifies any defects in the application.
These defects are fixed by the developers and the testing team tests the fixes to ensure that the defect is fixed. They also perform regression testing of the application to see if any new defects were introduced.
Testers with banking domain knowledge were also hired for the project so that they could test the application based on the domain perspective. Security testing teams were assigned to test the security of the banking application.
Deployment The team builds and installs the application on the servers which were procured for the banking application.
Some of the high level activities include installing the OS on the servers, installing security patches, hardening the servers, installing web servers and application servers, installing the database etc.
They also co-ordinate with network and IT administrative teams etc to finally get the application up and running on the production servers. Maintenance During the maintenance phase, the team ensures that the application is running smoothly on the servers without any downtime.
Issues that are reported after going live are fixed by the team and tested by the testing team. Waterfall model was used significantly in the development of software till the year Even after the Agile manifesto was published inWaterfall model continued to be used by many organization till the last decade.
These days most project follow Agile Methodologysome form of Iterative model or one of the other models depending on their project specific requirement.
With the evolution of technology, there were cases where large scale enterprise systems were developed over a period of 2 to 3 years but were redundant by the time they were completed.
There were several reasons for this. Net etc would replace them with web based functionality. Even if the application was developed using a new technology, factors like more competitors entering the market, cheaper alternatives becoming available, better functionality using newer technologies, change in customers requirement etc.
However, there are some areas where Waterfall model was continued to be preferred. Consider a system where human life is on the line, where a system failure could result in one or more deaths.
In some countries, such mishaps could lead to imprisonment for those who are accountable. Consider a system where time and money were secondary considerations and human safety was first. In such situations, Waterfall model was the preferred approach.
This is because of the strict standards and requirements that have to be followed. In such industries, the requirements are known well in advance and contracts are very specific about the deliverable of the project.
DOD Agencies typically considered Waterfall model to be compatible with their acquisition process and rigorous oversight process required by the government. Having said that, even these industries are being disrupted by the use of Iterative model and Agile methodology by organizations like Space X and others.
Waterfall model was also used in banking, healthcare, control system for nuclear facilities, space shuttles etc Advantages of waterfall model This model is simple and easy to understand and use. It is easy to manage due to the rigidity of the model — each phase has specific deliverables and a review process.If you were to draft a profile for a UX thought leader, you'd likely come up with something that closely resembled Kim Lenox.
Known for resetting the perimeters of everyday problem solving, Kim has devoted her career to making life—if not the world—better through user experience design. FAITH | LEARNING | COMMUNITY. In the way of Jesus, St Joseph’s Catholic High School aspires to respect and celebrate the dignity of all.
Inspired by the life of St Joseph, the school promotes a culture of faith, justice and service. attheheels.com allows expert authors in hundreds of niche fields to get massive levels of exposure in exchange for the submission of their quality original articles.
This article is the complete set of all the advantages and disadvantages of mobile phones essay for students in points.
Read all benefits of cell phones. » Articles published in the past year To view other articles click corresponding year from the navigation links on the side bar. The students are all also receiving the same high quality information, using the robot teacher for the student instruction can greatly cut down on the teacher salary costs, By placing the burden of teaching the lessons on programmed instruction.