XML Schema sequence Element
 Complete XML Schema Reference
Definition and Usage
The sequence element specifies that the child elements must appear in a
sequence. Each child element can occur from 0 to any number of times.
Element Information
- Parent elements: group, choice, sequence, complexType, restriction
(both simpleContent and complexContent), extension (both simpleContent and
complexContent)
Syntax
<sequence
id=ID
maxOccurs=nonNegativeInteger|unbounded
minOccurs=nonNegativeInteger
any attributes
>
(annotation?,(element|group|choice|sequence|any)*)
</sequence>
|
(The ? sign declares that the element can occur zero or one time inside the
sequence element)
| Attribute |
Description |
| id |
Optional. Specifies a unique ID for the element |
| maxOccurs |
Optional. Specifies the maximum number of times the
sequence
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
sequence
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
This example shows a declaration for an element called "personinfo", which
must contain the following five elements in order; "firstname", "lastname",
"address", "city", and "country":
<xs:element name="personinfo">
<xs:complexType>
<xs:sequence>
<xs:element name="firstname" type="xs:string"/>
<xs:element name="lastname" type="xs:string"/>
<xs:element name="address" type="xs:string"/>
<xs:element name="city" type="xs:string"/>
<xs:element name="country" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
|
Example 2
This example shows a declaration for an element called "pets" that
can have zero or more of the following elements, dog and cat, in the sequence
element:
<xs:element name="pets">
<xs:complexType>
<xs:sequence minOccurs="0" maxOccurs="unbounded">
<xs:element name="dog" type="xs:string"/>
<xs:element name="cat" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
|
Complete XML Schema Reference
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