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identifier

A Schema.org Property
Thing > Property :: identifier
  • Canonical URL: https://schema.org/identifier
  • Equivalent Property: cmns-id:identifiedBy
    Equivalent Property: dcterms:identifier
  • Check for open issues.
The identifier property represents any kind of identifier for any kind of Thing, such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See background notes for more details.

Values expected to be one of these types

Used on these types


Sub-properties

Examples

Example 1
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No Markup Microdata RDFa JSON-LD Structure
Example notes or example HTML without markup.
<p>
Title: Library linked data in the cloud : OCLC's experiments with new models of resource description<br/>
Author: Carol Jean Godby<br/>
ISBN: 9781627052191<br/>
oclcnum: 889647468<br/>
Details: <a href="http://www.worldcat.org/oclc/889647468">WorldCat.org</a>
</p>
Example encoded as Microdata embedded in HTML.
<div itemscope itemtype="https://schema.org/Book">
    Title: <span itemprop="name">Library linked data in the cloud : OCLC's experiments with new models of resource description</span><br>
    Author: <span itemprop="author">Carol Jean Godby</span><br>
    ISBN: <span itemprop="isbn">9781627052191</span><br>
    <div itemscope itemprop="identifier" itemtype="https://schema.org/PropertyValue">
        <span itemprop="propertyID">OCoLC</span>: <span itemprop="value">889647468</span>
    </div><br>
    Details: <a itemprop="sameAs" href="http://www.worldcat.org/oclc/889647468">WorldCat.org</a>
</div>
Example encoded as RDFa embedded in HTML.
<div vocab="https://schema.org/" typeof="Book">
    Title: <span property="name">Library linked data in the cloud : OCLC's experiments with new models of resource description</span><br>
    Author: <span property="author">Carol Jean Godby</span><br>
    ISBN: <span property="isbn">9781627052191</span><br>
    <div property="identifier" typeof="PropertyValue">
        <span property="propertyID">OCoLC</span>: <span property="value">889647468</span>
    </div>
</div>
    <br>
    Details: <a property="sameAs" href="http://www.worldcat.org/oclc/889647468">WorldCat.org</a>
Example encoded as JSON-LD in a HTML script tag.
{
 "@context": "https://schema.org/",
 "@type": "Book",
 "name": "Library linked data in the cloud : OCLC's experiments with new models of resource description",
 "author": "Carol Jean Godby",
 "isbn": "9781627052191",
 "identifier": {
 "@type": "PropertyValue",
   "propertyID": "OCoLC",
   "value":  "889647468"
  },
 "sameAs": "http://www.worldcat.org/oclc/889647468"
}
Structured representation of the JSON-LD example.
Example 2
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No Markup Microdata RDFa JSON-LD Structure
Example notes or example HTML without markup.
<div">
Company Record
<h1>A UK Organization Ltd</h1>
Registered office address: 1 A Street, London<br/>
Company Number: 99065782
</div>
Example encoded as Microdata embedded in HTML.
<div itemscope itemtype="https://schema.org/LocalBusiness">
    Company Record
    <h1 itemprop="name">A UK Organization Ltd</h1>
    Registered office address: <span itemprop="address">1 A Street, London</span><br>
    <div itemscope="" itemprop="identifier" itemtype="https://schema.org/PropertyValue">
        <span itemprop="propertyID">Company Number</span>: <span itemprop="value">99065782</span>
    </div><br>
</div>
Example encoded as RDFa embedded in HTML.
<div vocab="https://schema.org/" typeof="LocalBusiness">
    Company Record
    <h1 property="name">
        A UK Organization Ltd</h1>
        Registered office address: <span property="address">1 A Street, London</span><br>
    <div property="identifier" typeof="PropertyValue">
        <span property="propertyID">Company Number</span>: <span property="value">99065782</span>
    </div><br>
</div>
Example encoded as JSON-LD in a HTML script tag.
{
  "@context": "https://schema.org/",
  "@type": "LocalBusiness",
  "name": "A UK Organization Ltd",
  "address": "1 A Street, London",
  "identifier": {
    "@type": "PropertyValue",
    "propertyID": "Company Number",
    "value":  "99065782"
  }
}
Structured representation of the JSON-LD example.