Schema Central > XML Schema 1.0 > xsd:IDREF

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xsd:IDREF

The type xsd:IDREF is used for an attribute that references an ID. All attributes of type xsd:IDREF must reference an xsd:ID in the same XML document. A common use case for xsd:IDREF is to create a cross-reference to a particular section of a document. Like ID, an xsd:IDREF value must be an NCName.

Simple Type Information

Namespace: http://www.w3.org/2001/XMLSchema

Schema Document: datatypes.xsd

Content

Based on xsd:NCName
Pattern: [\i-[:]][\c-[:]]* (Defined in type xsd:NCName)
White Space: collapse (Defined in type xsd:token)

Type Inheritance Chain

xsd:anySimpleType
- restricted by xsd:string
  - restricted by xsd:normalizedString
    - restricted by xsd:token
      - restricted by xsd:Name
        restricted by xsd:NCName
        restricted by xsd:IDREF
        used in list xsd:IDREFS

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