XML Schema group Element
 Complete XML Schema Reference
Definition and Usage
The group element is used to define a group of elements to be used in
complex type definitions.
Element Information
- Parent elements: schema, choice, sequence, complexType, restriction
(both simpleContent
and complexContent), extension (both simpleContent
and complexContent)
Syntax
<group
id=ID
name=NCName
ref=QName
maxOccurs=nonNegativeInteger|unbounded
minOccurs=nonNegativeInteger
any attributes
>
(annotation?,(all|choice|sequence)?)
</group>
|
(The ? sign declares that the element can occur zero or one time
inside the group element)
| Attribute |
Description |
| id |
Optional. Specifies a unique ID for the element |
| name |
Optional. Specifies a name for the group. This attribute
is used only when the schema element is the parent of this group element. Name and ref attributes cannot
both be present |
| ref |
Optional. Refers to the name of another group.
Name and ref attributes cannot both be present |
| maxOccurs |
Optional. Specifies the maximum number of times the group
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 group
element can occur in the parent 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
The following example defines a group containing a sequence of four elements
and uses the group element in a complex type definition:
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:group name="custGroup">
<xs:sequence>
<xs:element name="customer" type="xs:string"/>
<xs:element name="orderdetails" type="xs:string"/>
<xs:element name="billto" type="xs:string"/>
<xs:element name="shipto" type="xs:string"/>
</xs:sequence>
</xs:group>
<xs:element name="order" type="ordertype"/>
<xs:complexType name="ordertype">
<xs:group ref="custGroup"/>
<xs:attribute name="status" type="xs:string"/>
</xs:complexType>
</xs:schema>
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Complete XML Schema Reference
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