Mapping to other 
Schemes
products
parties
Entities such as:
manifestations
  (“products”)
abstractions
e.g. ISO:
ISIL
ISTC,ISWC,ISAN
ISBN, ISSN
licences
etc…
e.g. non-ISO:
PII
SICI
IPI
e.g. indecs
Data model/ontology
Define and relate entities to be identified
Product information
exchange formats
e.g. ONIX, PRISM
Matching 
e.g. InterParty
e.g. DOI
structured metadata
associated by internal databases or global resolution to
Interoperable Public services
about identified entities:
global, interoperable
in common dictionary
allows resolution to   
e.g. iDD
via  DOI
Have identifiers