{{about|semantic equivalence of metadata|the concept in mathematical logic|Logical equivalence 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: * Class or concept equivalence. A statement that two high level concepts have similar or equivalent meaning. * Property or attribute equivalence. A statement that two properties, descriptors or attributes of classes have similar meaning. * Instance equivalence. A statement that two instances of data are the same or refer to the same instance.


Assume that there are two organizations, each having a separate data dictionary. The first organization has a data element entry: PersonFamilyName The name of a person shared with other members of their family. and a second organization has a data dictionary with a data element with the following entry: IndividualLastName The name of an individual person shared with other members of their family. these two data elements can be considered to have the same meaning and can be marked as semantically equivalent.

See also

* Logical equivalence * Metadata * Vocabulary-based transformation * Web Ontology Language (OWL)


World Wide Web OWL Language Reference

Universal Data Element Framework Web Site
Semantic Equivalency for Standards and Integrations

External links

OWL definition of Class Equivalency

OWL definition of Property Equivalency
Category:Metadata Category:Semantics