Functional Integration Testing

Integration testing (sometimes called integration and testing, abbreviated I&T) is the phase in software testing in which individual software modules are combined and tested as a group. Integration testing is conducted to evaluate the compliance of a system or component with specified functional requirements. It occurs after unit testing and before validation testing. Integration testing takes as its input modules that have been unit tested, groups them in larger aggregates, applies tests defined in an integration test plan to those aggregates, and delivers as its output the integrated system ready for system testing. Fundamentally, data conversion or integration testing is no different from any other types of testing. You should have some sort of requirement spec and as normal you should write your tests off that.

he main difference between the way data conversion testing is done and the way functional testing is done is that for the former you should (for the most part) use SQL queries, for the latter you should use the GUI. Therefore the testers that will be writing/performing the data conversion testing need to know SQL. You can get by without knowing the syntax for the INSERT, UPDATE etc queries but knowledge of the SELECT query and everything that can be used with it is pretty much essential. A fine memory-jogger is the SQL Pocket Guide from O’Reilly. Data conversion is two ways such as