What is a Private Enterprise Number OID? An Object Identifier (OID) is needed for defining your own Simple Network Management Protocol (SNMP) or Lightweight Directory Access Protocol (LDAP) objects.
A DOI (or Digital Object Identifier) is used to reliably identify digital content. They’re most often assigned to journal articles, but they can also be assigned to books, videos, infographics — ...
DOI (digital object identifier) is a unique and persistent identifier for digital objects or documents. DOI identifiers refer to websites on which the metadata of the relevant datasets can be found.