OIDs to manage the many complex values sets or "vocabularies" used in the Public Health Information Network (PHIN) Vocabulary Access and Distribution System (VADS). See also Digital object identifier Extended Validation Certificate International Geo Sample Number LSID Persistent Object Identifier Surrogate key Uniform Resource Name Universally Unique Identifier References External links Object Identifier Repository Global OID reference database Harald Tveit Alvestrand's Object Identifier Registry IANA Private Enterprise Numbers HL7 OID registry Obtaining an Object Identifier Identifiers Network management ASN.1