37. What's the difference between System testing and Acceptance testing?
Acceptance testing
checks the system against the "Requirements." It is similar to System
testing in that the whole system is checked but the important difference
is the change in focus:
System testing checks that the system that was specified has been delivered. Acceptance testing checks that the system will deliver what was requested. The customer should always do Acceptance testing and not the developer.
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The customer knows what is required from the system to achieve value in the business and is the only person qualified to make that judgement. This testing is more about ensuring that the software is delivered as defined by the customer. It's like getting a green light from the customer that the software meets expectations and is ready to be used.
System testing checks that the system that was specified has been delivered. Acceptance testing checks that the system will deliver what was requested. The customer should always do Acceptance testing and not the developer.
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The customer knows what is required from the system to achieve value in the business and is the only person qualified to make that judgement. This testing is more about ensuring that the software is delivered as defined by the customer. It's like getting a green light from the customer that the software meets expectations and is ready to be used.
38. Can you explain regression testing and confirmation testing?
Regression
testing is used for regression defects. Regression defects are defects
occur when the functionality which was once working normally has stopped
working. This is probably because of changes made in the program or the
environment. To uncover such kind of defect regression testing is
conducted.
The following figure shows the difference between regression and confirmation testing.
If we fix a defect in an existing application we use confirmation testing to test if the defect is removed. It's very possible because of this defect or changes to the application that other sections of the application are affected. So to ensure that no other section is affected we can use regression testing to confirm this.
Source :http://www.indiabix.com
The following figure shows the difference between regression and confirmation testing.
If we fix a defect in an existing application we use confirmation testing to test if the defect is removed. It's very possible because of this defect or changes to the application that other sections of the application are affected. So to ensure that no other section is affected we can use regression testing to confirm this.
Source :http://www.indiabix.com
