XML Schema choice Element
 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 1
<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.
Complete XML Schema Reference
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