Examples of Definitions That Could Be Improved
Here is the definition of "person" data element as defined in the www.w3c.org Friend of a Friend specification *:
Person: A person.Although most people do have an intuitive understanding of what a person is, the definition has much room for improvement. The first problem is that the definition is circular. Note that this definition really does not help most readers and needs to be clarified.
Here is the definition of the "Person" Data Element in the Global Justice XML Data Model 3.0 *:
person: Describes inherent and frequently associated characteristics of a person.Note that once again the definition is still circular. Person should not reference itself. The definition should use terms other than person to describe what a person is.
Here is a more precise but shorter definition of a person:
Person: An individual human being.Note that it uses the word individual to state that this is an instance of a class of things called human being. Technically you might use "homo sapiens" in your definition, but more people are familiar with the term "human being" than "homo sapiens," so commonly used terms, if they are still precise, are always preferred.
Sometimes your system may have cultural norms and assumptions in the definitions. For example if your "Person" data element tracked characters in a science fiction series that included aliens you may need a more general term other than human being.
Person: An individual of a sentient species.Read more about this topic: Data Element Definition
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