Originally Posted by
Davide
<snip> in a chemical lab, an analysis is made of several tests (usually 10 to 20). A test is a measure performed on a parameter, with a given unit of measure, using a set of methods (usually 1 to 3). The users first create an analysis, then the tests to be performed, selecting the parameter, the UM and the methods to be used. The same couple parameter + UM could be tested using different methods. Then they associate the tests to an analysis, perform the tests and record the outcomes. <snip>