<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 Imprint, Size of a Document, and Reprint Information]
Attributesatt.global (@xml:id, @n, @xml:lang, @xml:base, @xml:space) (att.global.rendition (@rend, @style, @rendition)) (att.global.linking (@corresp, @synch, @sameAs, @copyOf, @next, @prev, @exclude, @select)) (att.global.analytic (@ana)) (att.global.facs (@facs)) (att.global.change (@change)) (att.global.responsibility (@cert, @resp)) (att.global.source (@source)) att.sortable (@sortKey) att.datable (@calendar, @period) (att.datable.w3c (@when, @notBefore, @notAfter, @from, @to)) (att.datable.iso (@when-iso, @notBefore-iso, @notAfter-iso, @from-iso, @to-iso)) (att.datable.custom (@when-custom, @notBefore-custom, @notAfter-custom, @from-custom, @to-custom, @datingPoint, @datingMethod)) att.typed (type, @subtype)
typecategorizes the identifier, for example as an ISBN, Social Security number, etc.
Derived fromatt.typed
Status Optional
Datatype teidata.enumerated
Suggested values include:
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.
International Standard Serial Number: an eight-digit number to uniquely identify a serial publication.
Digital Object Identifier: a unique string of letters and numbers assigned to an electronic document.
Uniform Resource Identifier: a string of characters to uniquely identify a resource, following the syntax of RFC 3986.
A data number in the Virtual Internet Authority File assigned to link different names in catalogs around the world for the same entity.
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 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.
Member of
Contained by
May contain
gaiji: g
header: idno
character data

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.

<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

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
 <alternate minOccurs="0"

  <classRef key="model.gLike"/>
  <elementRef key="idno"/>
Schema Declaration
element idno
   attribute type
    | "ISSN"
    | "DOI"
    | "URI"
    | "VIAF"
    | "ESTC"
    | "OCLC"
    | teidata.enumerated
   ( text | tei_model.gLike | tei_idno )*