Pictures of Models

 


issues, patches are released. Also to enhance the product some better versions are released. That’s why, maintenance is done to deliver these changes in the customer environment.





Validation Phases

The different validation phases in the V-Model are explained in details below:-

 

1.     Unit Testing

Unit tests designed in the module design phase are executed on the code during this validation phase. Unit testing is the testing at code level and helps eliminate bugs at an early stage, though all defects cannot be uncovered by unit testing.

 

2.     Integration Testing

After completion of unit testing Integration testing is performed. In integration testing, the modules are integrated and the system is tested. Integration testing is performed on  the Architecture design. This test verifies the communication of modules among themselves.

 

1.     System Testing

System testing is directly associated with the system design phase. System tests check the entire system functionality and the communication of the system under development with external systems. Most of the software and hardware compatibility issues can be uncovered during this system test execution. It also tests the functional and non-functional requirements of the developed application.

 

2.        User Acceptance Testing (UAT)

UAT is associated with the business requirement analysis phase and involves testing the product in user environment that resembles the production environment. UAT verifies that the delivered system meets user’s requirement and system is ready for use in real world.




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