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the definition/description of data elements
values that are allowed to chose (e.g., in system A, sex allows for male and female, while in system B, sex also allows for intersex. Such difference reflects the gap of their semantics)
relationship between data elements (e.g., ‘sex’ variable is one attribute of ‘patient’ profile, which may imply that the semantics of this ‘sex’ variable is ‘sex of patient’)
The outcome of this step should be a set of data elements (variables) with clear and unambiguous semantics, which reflect the information you want to collect or share. Be aware that finding machine-actionable items from ontologies for the data elements is not yet part of this step, but is described in creating the semantic model.
Why is this step important
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