Waterfall Model


Waterfall Model:

Water fall model is a traditional model for software development life cycle(SDLC).
It is considered as classic development model. This model describes the development method in linear and sequential manner. 

This type of development is having a distinct goal for each phase. It is the one-way development process. If the development of one phase is over then only we can switch for next phase and there is no turning point for go back.

The image shown here is regarding the process of waterfall model which shows us the flow of life cycle for a system. 

In waterfall model we follow the following phases:

  • Project Planning
  • Requirement Collection
  • Feasible Study
  • Design
    • HLD(High Level Design)
    • LLD(Low Level Design)
  • Development
  • Testing
  • Installation/Acceptance
  • Maintenance

               --------------------------------------------------------------------------------

Brief of all the phases

Project Planning

In this phase, the basic planning for project will takes place. Here, the schedule of project, management etc will be planned.

Requirement Collection

In this phase all the requirements will be gathered and along with that the SRS will be translated from business language to software language.

Feasible Study

In this phase, generally we check for 
      • Technical feasibility
      • Resource Feasibility &
      • Financial Feasibility

Design

The Design phase will be divided into two sub-phases.
    • HLD(i.e. High Level Design): This part of design will provides the architecture of the software/app to be developed. 
    • LLD(i.e. Low Level Design): This part will describes regarding each and every feature of the software/app behavior and functionality. But only using design, not with the help of code.

Development

In this phase the developers will start building the software/app with the help of codes. 

Testing

In this phase, the testers will test the software/app and find the defects. After getting the defect they communicate with developers to fix that and again they will test it. Here detecting and refining of defect will takes place.

Installation/Acceptance

In this phase, the software/app will be install at client's place for their use after it has been developed and tested.

Maintenance

In this phase, during using the of software/app the client got some bug or he needs some correction, so he will send back for correcting those errors. In this phase minor changes like adding, deleting or modifying small features of software/app will also takes place.

note: 100% testing is not possible for tester's because the way they are testing the product is different from the way the customer's are using the product.

Comments

Post a Comment

Popular posts from this blog

Overview Of Software Testing

Software Testing Testing of app can never identify all the defects. Its doesn't matter we are testing on which type of app. By the definition of software testing we all knows, Software testing is an investigation conducted to provide stakeholders with information about the quality of the product or service under test. It can also gives us an objective, independent view on the software or app to provide the allowance of business for appreciate and understand the risk of the software to implement that. Software testing only can be stated us the process of validating and verifying a software/app that: it is working as expected, it can be implemented with the same circumstances, it meets the requirements that guided its design and development, and last but most important that it should satisfies the need of stakeholders. So in other words we can say that, "Software testing is a process of finding or identifying defects in software/app". It is verifying the f
Read more

Testing Types

Testing types through which an application or software can be tested: Installation Testing   This test will provide us the satisfaction that the system is installed correctly and work as similar as production environment. Compatibility Testing   In this test we test the functionality of an app/software in different hardware and software environment. Here we focus on Hardware platform, Operating system, Database, Browser etc which all will necessary element to run that application/software. Most of the time the reason for failure of application /software is compatibility issue. Smoke and Sanity Testing Smoke testing : It is scripted and wide testing which take all important features to perform high level testing. Sanity testing : It is unscripted deep testing which take some most important features and perform high level testing. It must and should have to perform. Regression Testing This type of testing will mainly held to find the defect while major changes has been occurred i
Read more

Types of Testing

Types Of Software Testing To describe the testers and type of testing traditionally software testing methodology are divided into White Box Testing, Black Box Testing and Grey Box Testing. Brief Description of all 3 types of testing: White Box Testing White box testing will also be calling by few other names viz. Unit testing,  Open Box Testing, Clear Box testing, Glass Box Testing, Transparent Testing and Structural Testing. Entire white box testing is done by Developers. In this the developers will test each and every line of the code in the program. The internal structure or working of the program will be tested here. After performing white box testing the developers forwards the software/app to testing team. The testing team will perform black box testing on that software/app and checks for behavior or functionality against the requirement and if finds any defect intimate regarding that to developers. The developers fixes that defect and perform white box testing then fo
Read more