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XML Schema attributeGroup Element


XML Schema Reference Complete XML Schema Reference

Definition and Usage

The attributeGroup element is used to group a set of attribute declarations so that they can be incorporated as a group into complex type definitions.

Element Information

  • Parent elements: attributeGroup, complexType, schema, restriction (both simpleContent and complexContent), extension (both simpleContent and complexContent)

Syntax

<attributeGroup
id=ID
name=NCName
ref=QName
any attributes
>

(annotation?),((attribute|attributeGroup)*,anyAttribute?))

</attributeGroup>

(The ? sign declares that the element can occur zero or one time, and the * sign declares that the element can occur zero or more times inside the attributeGroup element)

Attribute Description
id Optional. Specifies a unique ID for the element
name Optional. Specifies the name of the attribute group. Name and ref attributes cannot both be present
ref Optional. Specifies a reference to a named attribute group. Name and ref attributes cannot both be present
any attributes Optional. Specifies any other attributes with non-schema namespace

Example 1

<xs:attributeGroup name="personattr">
  <xs:attribute name="attr1" type="string"/>
  <xs:attribute name="attr2" type="integer"/>
</xs:attributeGroup>

<xs:complexType name="person">
  <xs:attributeGroup ref="personattr"/>
</xs:complexType>

The example above defines an attribute group named "personattr" which is used in a complex type named "person".


XML Schema Reference Complete XML Schema Reference

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