Concrete VVCase represents the precise description of a V&V effort on a concrete technical level and thus provides all necessary information to actually perform this V&V effort. <br/><br/>However, it does not represent the actual execution of the effort. <br/><br/>This is the purpose of the VVLog. Each VVLog metaclass represents an execution of a concrete VVCase.<br/><br/>For example, if the HIL test of the wiper system with a certain set of stimuli was performed on Friday afternoon and, for checkup, again on Monday, then there will be one ConcreteVVCase describing the HIL test and two VVLogs describing the test results from Friday and Monday respectively.<br/><br/>Semantics:<br/>VVLog captures an execution of a ConcreteVVCase.<br/><br/>Extension: Class<br/>