Creating an XML schema

The following is an example of creating an XML schema:

Create an XML schema containing the elements for your purchase order. See the following sample XML schema.
Element definition should end on the same line unless that element has a body or children.
Name the schema PurchaseOrder.xsd.
<?xml version="1.0" encoding="UTF-8"?>

<xs:schema targetNamespace="http://tempuri.org" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org" elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:element name="PO" type="PurchaseOrder">
<xs:annotation>
<xs:documentation>Comment describing your root element
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:complexType name="PurchaseOrder">
<xs:sequence>
<xs:element name="POID" type="xs:string"/>
<xs:element name="CompanyName" type="xs:string"/>
<xs:element name="Description" type="xs:string"/>
<xs:element name="PhoneNumber" type="xs:string"/>
<xs:element ref="Items"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="LineItem">
<xs:sequence>
<xs:element name="ItemName" type="xs:string"/>
<xs:element name="Quantity" type="xs:int"/>
<xs:element name="ItemId" type="xs:string"/>
</xs:sequence>
</xs:complexType>
<xs:element name="Item" type="LineItem"/>
<xs:element name="Items">
<xs:complexType>
<xs:sequence>
<xs:element ref="Item" minOccurs="0"
maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>

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