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more general categories information about this item 12. Product Identity 12. Product Identity Product Identity (32) Identification Scheme (1) description: Ontomatica's Identification Scheme Application integrates relevant ontology rules (items, properties, relationships and constraints) with relevant data sets. The Identification Scheme Application is the electronic specification of an information schema to identify a product. Background: In metadata, an identification scheme is used to identify unique records in a set. If a data element is used to identify a record within a data set, the data element uses the Identifier representation term. An identification scheme should be contrasted with a classification scheme. Classification schemes are used to classify individual records into categories. Many records in a data set may be in a single category.