THE WORLD'S LARGEST WEB DEVELOPER SITE

XML Schema choice Element


XML Schema Reference Complete XML Schema Reference

Definition and Usage

XML Schema choice element allows only one of the elements contained in the <choice> declaration to be present within the containing element.

Element Information

  • Parent elements: group, choice, sequence, complexType, restriction (both simpleContent and complexContent), extension (both simpleContent and complexContent)

Syntax

<choice
id=ID
maxOccurs=nonNegativeInteger|unbounded
minOccurs=nonNegativeInteger
any attributes
>

(annotation?,(element|group|choice|sequence|any)*)

</choice>

(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 choice element)

Attribute Description
id Optional. Specifies a unique ID for the element
maxOccurs Optional. Specifies the maximum number of times the choice element can occur in the parent element. The value can be any number >= 0, or if you want to set no limit on the maximum number, use the value "unbounded". Default value is 1
minOccurs Optional. Specifies the minimum number of times the choice element can occur in the parent the element. The value can be any number >= 0. Default value is 1
any attributes Optional. Specifies any other attributes with non-schema namespace

Example

<xs:element name="person">
  <xs:complexType>
    <xs:choice>
      <xs:element name="employee" type="employee"/>
      <xs:element name="member" type="member"/>
    </xs:choice>
  </xs:complexType>
</xs:element>

The example above defines an element named "person" which must contain either a "employee" element or a "member" element.


XML Schema Reference Complete XML Schema Reference

COLOR PICKER

colorpicker

SHARE THIS PAGE






Search w3schools.com:

Translate w3schools.com: