<idno>

<idno> (identifier) supplies any form of identifier used to identify some object, such as a bibliographic item, a person, a title, an organization, etc. in a standardized way. [13.3.1 Basic Principles 2.2.4 Publication, Distribution, Licensing, etc. 2.2.5 The Series Statement 3.12.2.4 Imprint, Size of a Document, and Reprint Information]
Module header — The TEI Header
Attributes
type⚓︎ categorizes the identifier, for example as an ISBN, Social Security number, etc.
Derived from att.typed
Status Optional
Datatype teidata.enumerated
Suggested values include:
ISBN
International Standard Book Number: a 13- or (if assigned prior to 2007) 10-digit identifying number assigned by the publishing industry to a published book or similar item, registered with the International ISBN Agency.
ISSN
International Standard Serial Number: an eight-digit number to uniquely identify a serial publication.
DOI
Digital Object Identifier: a unique string of letters and numbers assigned to an electronic document.
URI
Uniform Resource Identifier: a string of characters to uniquely identify a resource, following the syntax of RFC 3986.
VIAF
A data number in the Virtual Internet Authority File assigned to link different names in catalogs around the world for the same entity.
ESTC
English Short-Title Catalogue number: an identifying number assigned to a document in English printed in the British Isles or North America before 1801.
OCLC
OCLC control number (record number) for the union catalog record in WorldCat, a union catalog for member libraries in the Online Computer Library Center global cooperative.
calendar⚓︎ indicates one or more systems or calendars to which the date represented by the content of this element belongs.
Deprecated This feature will be withdrawn after 2024-11-11
Status Optional
Datatype 1–∞ occurrences of teidata.pointer separated by whitespace
Schematron

<sch:rule context="tei:*[@calendar]">
<sch:assert test="string-length( normalize-space(.) ) gt 0"> @calendar indicates one or more
systems or calendars to which the date represented by the content of this element belongs,
but this <sch:name/> element has no textual content.</sch:assert>
</sch:rule>
Member of
Contained by
analysis: cl phr s span
figures: cell figDesc
iso-fs: fDescr fsDescr
linking: ab seg
spoken: u writing
verse: metSym rhyme
May contain
gaiji: g
header: idno
character data
Note

idno should be used for labels which identify an object or concept in a formal cataloguing system such as a database or an RDF store, or in a distributed system such as the World Wide Web. Some suggested values for type on idno are ISBN, ISSN, DOI, and URI.

Example
<idno type="ISBN">978-1-906964-22-1</idno>
<idno type="ISSN">0143-3385</idno>
<idno type="DOI">10.1000/123</idno>
<idno type="URI">http://www.worldcat.org/oclc/185922478</idno>
<idno type="URI">http://authority.nzetc.org/463/</idno>
<idno type="LT">Thomason Tract E.537(17)</idno>
<idno type="Wing">C695</idno>
<idno type="oldCat">
 <g ref="#sym"/>345
</idno>

In the last case, the identifier includes a non-Unicode character which is defined elsewhere by means of a glyph or char element referenced here as #sym.

Content model
<content>
 <alternate minOccurs="0"
  maxOccurs="unbounded">

  <textNode/>
  <classRef key="model.gLike"/>
  <elementRef key="idno"/>
 </alternate>
</content>
Schema Declaration
<rng:element name="idno">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.global.rendition.attributes"/>
 <rng:ref name="att.global.linking.attributes"/>
 <rng:ref name="att.global.analytic.attributes"/>
 <rng:ref name="att.global.facs.attributes"/>
 <rng:ref name="att.global.change.attributes"/>
 <rng:ref name="att.global.responsibility.attributes"/>
 <rng:ref name="att.global.source.attributes"/>
 <rng:ref name="att.sortable.attributes"/>
 <rng:ref name="att.datable.attributes"/>
 <rng:ref name="att.datable.w3c.attributes"/>
 <rng:ref name="att.datable.iso.attributes"/>
 <rng:ref name="att.datable.custom.attributes"/>
 <rng:ref name="att.typed.attribute.subtype"/>
 <rng:optional>
  <rng:attribute name="type">
   <rng:choice>
    <rng:value>ISBN</rng:value>
    <rng:value>ISSN</rng:value>
    <rng:value>DOI</rng:value>
    <rng:value>URI</rng:value>
    <rng:value>VIAF</rng:value>
    <rng:value>ESTC</rng:value>
    <rng:value>OCLC</rng:value>
    <rng:ref name="teidata.enumerated"/>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="calendar">
   <rng:list>
    <rng:oneOrMore>
     <rng:ref name="teidata.pointer"/>
    </rng:oneOrMore>
   </rng:list>
  </rng:attribute>
 </rng:optional>
 <rng:zeroOrMore>
  <rng:choice>
   <rng:text/>
   <rng:ref name="model.gLike"/>
   <rng:ref name="idno"/>
  </rng:choice>
 </rng:zeroOrMore>
</rng:element>
element idno
{
   att.global.attributes,
   att.global.rendition.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   att.global.responsibility.attributes,
   att.global.source.attributes,
   att.sortable.attributes,
   att.datable.attributes,
   att.datable.w3c.attributes,
   att.datable.iso.attributes,
   att.datable.custom.attributes,
   att.typed.attribute.subtype,
   attribute type
   {
      "ISBN"
    | "ISSN"
    | "DOI"
    | "URI"
    | "VIAF"
    | "ESTC"
    | "OCLC"
    | teidata.enumerated
   }?,
   attribute calendar { list { teidata.pointer+ } }?,
   ( text | model.gLike | idno )*
}