In computer metadata, semantic equivalence is a declaration that two data elements from different vocabularies contain data that has similar meaning. There are three types of semantic equivalence statements:
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Assume that there are two organizations, each having a separate data dictionary. The first organization has a data element entry:
<DataElement> <Name>PersonFamilyName</Name> <Definition>The name of a person shared with other members of their family.</Definition> <DataElement>
and a second organization has a data dictionary with a data element with the following entry:
<DataElement> <Name>IndividualLastName</Name> <Definition>The name of an individual person shared with other members of their family.</Definition> <DataElement>
these two data elements can be considered to have the same meaning and can be marked as semantically equivalent.