![]() The relationship between professors is association because it doesn’t make any sense to say that a professor is part of another one. On top of that, a professor can work in multiple departments. Alternatively: are they members of the departments or not? Yes, they are. It is an example of aggregate data in healthcare. Another situation where aggregate data is crucial is in pharmaceutical trials. Here are some instances of how a firm, government, or researcher might utilize aggregate data: Pharmaceutical trials. We have to decide which is more logical: if we consider professors as parts of the departments or not. Companies can use aggregate data in a variety of ways across many industries. ![]() Will the departments exist after we close the university? Of course not, therefore it’s a composition.īut the professors will still exist (hopefully). Professors work in each department, who also has friends among each other. We’ll model a university, which has its departments.
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