In the last topic we’ve learned about Incremental Integration Testing. And in this topic, we will learn about Integration Testing. What will we see in Integration Testing? Its introduction, Integration Testing’s example and how Integration Testing can be used. After Completion of Unit Testing, we will integrate the modules with each other. So, we call it Integration Testing. Integration Testing is performed because we check the functional, performance and reliability of the modules when they will interact with each other. We will take an example of a PC. When we are assembling the PC, we will join all the units with it. Keyboard, mouse, printer, webcam and we will turn on the PC and see how all the parts of the PC are working. Now you must have got a question in your mind that we have just studied Incremental Integration Testing. In that also, something similar was there. That doubt we will clear in this slide. In Incremental Testing we will go by modules. Like the 1st in the PC, we attached the keyboard. So, we will test the keyboard 1st. Then we attached the mouse, so we will test the mouse. Then the printer. But in Integration Testing what we will do, we will join keyboard, mouse, printer, webcam, we will join them all together. And after that test it. Now it must be clear in your mind what Incremental integration and Integration Testing is. In this also there are types of Integration Testing. Top down and Bottom up. Top down and bottom up are the same, like we studied in Incremental Integration. Two things are not there in it. That is the Big Bang and Hybrid integration. Now we will see Big Bang Testing and how the big bang integration testing is done? All the inputs are linked together so that there is a complete system. When this type of testing strategy is used, then finding the error becomes a challenge. This is called Big Bang Integration Testing. Hybrid Integration. What have we done in Hybrid Integration Testing? All the top down and bottom-up advantages that are there. That we have selected and we call that Hybrid Testing. We studied Integration Testing. We saw one example. We saw the techniques and the most important thing; we saw the difference between Incremental Integration and Integration Testing. Our next topic is System Testing.
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