Skip to main content

What is Waterfall Model in Software Development Life Cycle

Now a days Waterfall Model is outdated but it is the oldest model for defining the software development life cycle . Waterfall model shows the various steps of software development process . 

Waterfall model dominated several number of years to the software development life cycle . Software passes through many of the development process and waterfall model shows those steps in very easy linear consecutive steps of development process . 

Waterfall model only starts, when the developers get the complete requirements of the software on which they are working .

Waterfall model is the oldest , classic model and the base of other modern models that are working even today in the software industry .

As we know , software development is not only a process of only coding the softwares , developers cross the various steps like knowing the requirements , makink specifications , designing , coding etc . 

So let we give here a look the various linear consecutive steps of Waterfall Model -

Waterfall Model in Software Development Life Cycle

1. Getting Concept or Reqirements Analysis -
This is the first and most important phase of developing a software . Developers or Engineers talk to the customer first to list their requirements and expectations in the software for which customer is hiring a company . This phase gives the complete and concentrate directions to the entire software development life cycle . Software companies directly contact to the customers and gve them the Time Cost , Money cost , features details etc and also add the changes from customer side n this phase .

2. Developing Software Requirement Specification (SRS ) -
Software development is not like a one day cricket match that ends within a day but Teamwork is same as a cricket match . Specification is a detailed analysis of customer requirements and specifcation gives the working guidelines and easy to understand guidelines for the entire team of 2 , 5 ,10 or many developers . If a developer leave the project and another one joins , then written specification helps him to understand entire strategy . 

3. Software Designing -
This phase consists of the various features like data structures , software architecture , interface representations and  algorithmic details . This phase include the all algorithms , concepts , IDE informations , technology informations , Coding languages informations , URL Diagrams that they need to implement at the coding time . 

4. Coding Phase -
Now , after the Designing phase of  SDLC , It is the time to implement all the designing into the form of software codes . Software companies or developers use the different Coding languages that are previously discussed by them in the SRS document .

5. Testing of  Software -
This phase works as a doctor in the software development life cycle that detects the warnings , Errors oe any kind of informal thngs n the software coding . Now it is the phase of software development to check again the software codes , execute repair the codes if errors detected and generate the error and bugs free software code .

6. Packaging -
After building the codes and performing the testing operations , developers integrate all the individual programmes to build complete software package .

7. Implementation -
In this time , software company delivers the build software package to the customer . company installs the software package at the customer side and put t into practical use . Customers check the entire project , use that and if anything goes wrong n the software package according to customer then it goes to the maintenance phase .

8. Maintenance - 
In this phase software company repair the errors generated in the working phase of software package or suggested by the customer to implement something or repairing any kind of error . 

Advantages of Waterfall Model -

  1. Easy and simple to understand
  2. Step by Step consecutive steps of development 
  3. It is best for the projects where Software Requirements are very clear .
Disadvantages of Waterfall Model - 

  1. High amount of risk of time and money cost .
  2. It s not good suite for large projects .
  3. No one can define the tme range of entire development because of the time spend in each phase .
  4. After development completion , It is hard and tme taking to make changes .


    Great things starting you. I have understood your matter former to and you are just too wonderful. I really like anything you have developed now, surely like anything you are saw and the way in which you about it. You style it enjoyable and you silent care for to keep it smart.