Lightning can occur between opposite charges within the thunderstorm cloud (intra-cloud lightning) or between opposite charges in the cloud and on the ground (cloud-to-ground lightning). Lightning is one of the oldest observed natural phenomena on earth.
SYSTEM TESTING Fundamentals. DEFINITION. System Testing is a level of the software testing where a complete and integrated software is tested. The purpose of this test is to evaluate the systemâs compliance with the specified requirements. Definition by ISTQB. 1  system testing: The process of testing an integrated system to verify that it meets specified.
The main difference between System Testing and System Integration Testing is 1  â. System Testing looks after single systemâs integrity with relevant environment. 2  System Integration Testing looks after multiple systemsâ integrity with each other, being in same environment.he main difference between System Testing and System Integration Testing is 1  â. System Testing looks after single systemâs integrity with relevant environment. 2  System Integration Testing looks after multiple systemsâ integrity with each other, being in same environment.