This is the phase where you try to break the system. You have reached a point where you are testing real case scenarios. The system configured and now you must come up with extreme-case scenarios - system overloads, multiple users logging on at the same time with the same query, users entering invalid data,
nackers trying to access restricted areas and so on. The test cases must be . designed specifically to find the weak links in the system and these bugs should be fixed before going live.

15Going Live
This is it. Lights on, switchs thrown, gloves off. On the technical side, the work is almost complete - data conversion is done, databases are up and running; and on the functional side, the prototype is fully configured and tested and ready to go operational. The system is officially proclaimed operational, even though the implementation team must have been testing it and running it successfully for some time. But once the system is 'live', the old system is removed, and the new system is used for doing business.