XML Schema all Element
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Definition and Usage
The all element specifies that the child elements can appear in any order and that each child element can occur zero or one time.
Element Information
- Parent elements: group, complexType, restriction (both simpleContent and complexContent), extension (both simpleContent and complexContent)
Syntax
<all
id=ID
maxOccurs=1
minOccurs=0|1
any attributes
>
(annotation?,element*)
</all>
(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 all element)
| Attribute | Description |
|---|---|
| id | Optional. Specifies a unique ID for the element |
| maxOccurs | Optional. Specifies the maximum number of times the element can occur. The value must be 1. |
| minOccurs | Optional. Specifies the minimum number of times the element can occur. The value can be 0 or 1. Default value is 1 |
| any attributes | Optional. Specifies any other attributes with non-schema namespace |
Example 1
<xs:element name="person">
<xs:complexType>
<xs:all>
<xs:element name="firstname" type="xs:string"/>
<xs:element name="lastname" type="xs:string"/>
</xs:all>
</xs:complexType>
</xs:element>
The example above indicates that the "firstname" and the "lastname" elements can appear in any order but both elements MUST occur once and only once!
Example 2
<xs:element name="person">
<xs:complexType>
<xs:all>
<xs:element name="firstname" type="xs:string" minOccurs="0"/>
<xs:element name="lastname" type="xs:string" minOccurs="0"/>
</xs:all>
</xs:complexType>
</xs:element>
The example above indicates that the "firstname" and the "lastname" elements can appear in any order and each element CAN appear zero or one time!
❮ Complete XML Schema Reference
