Object identifier

In computing, an object identifier or OID is an identifier used to name an object (compare URN). Structurally, an OID consists of a node in a hierarchically-assigned namespace, formally defined using the ITU-T's ASN.1 standard.[citation needed] Successive numbers of the nodes, starting at the root of the tree, identify each node in the tree. Designers set up new nodes by registering them under the node's registration authority. The root of the tree contains the following three arcs:

  • 0: ITU-T
  • 1: ISO
  • 2: joint-iso-itu-t

Contents

Usage

  • In computer security, OIDs serve to name almost every object type in X.509 certificates, such as components of Distinguished Names, CPSs, etc.
  • Within X.500 directory schemas and protocols, to uniquely name each attribute type and object class, and other elements of schema.
  • Within LDAP schemas, each object class and each attribute type has a unique OID
  • In computer networking, an OID, in the context of the Simple Network Management Protocol (SNMP), consists of the object identifier for an object in a Management Information Base (MIB).
  • HL7, DICOM and other health care related information interchange standards use OIDs for globally unique identifiers for both individual information objects as well as References to code systems and data element dictionaries. DICOM uses the term UID (Unique IDentifier) in place of OID.
  • The IANA OID registry contains a list of registered entities that use OIDs to reference internal structures (e.g. directory attributes). Each entity is assigned an initial referential value (e.g. 1.3.6.1.4.1.5518 for TDS Telecom Inc.) and thereafter the internal numbering plan is up to the entity to define (e.g. 1.3.6.1.4.1.5518.1.5.47 might refer to the "CCID" attribute of the LDAP directory associated with customers). This allows for precise referencing of data attributes in a company or other entity.

Examples

The most common OIDs seen "in the wild" usually belong to the private enterprise numbers allocated by IANA under the 1.3.6.1.4.1 (iso.org.dod.internet.private.enterprise) arc.

Another increasingly used form[as of?] of OID is in the area of health care and public health informatics in the United States. Health Level Seven (HL7), a standards-developing organization in the area of electronic health care data exchange, is an assigning authority at the 2.16.840.1.113883 (joint-iso-itu-t.country.us.organization.hl7) node. HL7 maintains its own OID registry, and as of January 1, 2008 it contained almost 3,000 nodes, most of them under the HL7 root. The Centers for Disease Control and Prevention has also adopted OIDs to manage the many complex values sets or "vocabularies" used in public health. The various OIDs are available in the Public Health Information Network (PHIN) Vocabulary Access and Distribution System (VADS).

See also

References

This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.

External links


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Object Identifier — In der Informatik ist ein Object Identifier (OID) ein weltweit eindeutiger Bezeichner, der benutzt wird um ein Informationsobjekt zu benennen (vgl. URN). Ein OID stellt einen Knoten in einem hierarchisch zugewiesenen Namensraum dar, der durch den …   Deutsch Wikipedia

  • Digital object identifier — For the use of digital object identifiers on Wikipedia, see Wikipedia:Digital Object Identifier. A digital object identifier (DOI) is a character string (a digital identifier ) used to uniquely identify an object such as an electronic document.… …   Wikipedia

  • Digital object identifier — Saltar a navegación, búsqueda Un DOI (digital objet identifier) o Identificación de Material Digital, es un sistema estándar para legalizar la propiedad intelectual de obras difundidas a través de cualquier tipo de formato digital, por ejemplo… …   Wikipedia Español

  • Digital Object Identifier — Pour les articles homonymes, voir DOI. Digital object identifier (DOI, littéralement « identifiant d objet numérique ») est un mécanisme d identification de ressources numériques, comme un film, un rapport, des articles scientifiques,… …   Wikipédia en Français

  • Digital Object Identifier — Ein Digital Object Identifier (DOI; übersetzt etwa „Bezeichner für digitale Objekte“) ist ein eindeutiger und dauerhafter Identifikator für digitale Objekte. Er wird vor allem für Online Artikel von wissenschaftlichen Fachzeitschriften verwendet …   Deutsch Wikipedia

  • Digital object identifier — Ein Digital Object Identifier (DOI; übersetzt etwa „Bezeichner für digitale Objekte“) ist ein eindeutiger und dauerhafter Identifikator für digitale Objekte. Er wird vor allem für Online Artikel von wissenschaftlichen Fachzeitschriften verwendet …   Deutsch Wikipedia

  • digital object identifier — noun a tag comprising a prefix unique to the registrant and a suffix unique to the work, which is part of an international standard for identification of published material online, enabling online publishing with the protection of copyright. Also …   Australian English dictionary

  • digital object identifier — …   Useful english dictionary

  • Identifier — Identifiers on the back of a statue in the Louvre An identifier is a name that identifies (that is, labels the identity of) either a unique object or a unique class of objects, where the object or class may be an idea, physical [countable] object …   Wikipedia

  • Identifier — Ein Identifikator (auch Kennung oder kurz ID) ist ein künstlich zugewiesenes Merkmal zur eindeutigen Identifizierung eines Objektes. Beispielsweise verweist eine Hausnummer als Identifikator innerhalb einer Straße auf ein bestimmtes Haus. In… …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”