WriteXml

SuppProd.xml

<?xml version="1.0" standalone="yes"?>

<XMLProducts>

 <xsd:schema id="XMLProducts" targetNamespace="" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">

<xsd:element name="XMLProducts" msdata:IsDataSet="true">

<xsd:complexType>

<xsd:choice maxOccurs="unbounded">

<xsd:element name="products">

<xsd:complexType>

<xsd:sequence>

<xsd:element name="Product ID" type="xsd:int" minOccurs="0" />

<xsd:element name="ProductName" type="xsd:string" minOccurs="0" />

<xsd:element name="SupplierID" type="xsd:int" minOccurs="0" />

<xsd:element name="CategoryID" type="xsd:int" minOccurs="0" />

<xsd:element name="QuantityPerUnit" type="xsd:string" minOccurs="0" />

<xsd:element name="UnitPrice" type="xsd:decimal" minOccurs="0" />

<xsd:element name="UnitsInStock" type="xsd:short" minOccurs="0" />

<xsd:element name="UnitsOnOrder" type="xsd:short" minOccurs="0" />

<xsd:element name="ReorderLevel" type="xsd:short" minOccurs="0" />

<xsd:element name="Discontinued" type="xsd:boolean" minOccurs="0" />

</xsd:sequence>

</xsd:complexType>

</xsd:element>

<xsd:element name="suppliers">

<xsd:complexType>

<xsd:sequence>

<xsd:element name="SupplierID" type="xsd:int" minOccurs="0" />

<xsd:element name="CompanyName" type="xsd:string" minOccurs="0" />

<xsd:element name="ContactName" type="xsd:string" minOccurs="0" />

<xsd:element name="ContactTitle" type="xsd:string" minOccurs="0" />

<xsd:element name="Address" type="xsd:string" minOccurs="0" />

<xsd:element name="City" type="xsd:string" minOccurs="0" />

<xsd:element name="Region" type="xsd:string" minOccurs="0" />

<xsd:element name="PostalCode" type="xsd:string" minOccurs="0" />

<xsd:element name="Country" type="xsd:string" minOccurs="0" />

<xsd:element name="Phone" type="xsd:string" minOccurs="0" />

<xsd:element name="Fax" type="xsd:string" minOccurs="0" />

<xsd:element name="HomePage" type="xsd:string" minOccurs="0" />

</xsd:sequence>

</xsd:complexType>

</xsd:element>

</xsd:choice>

</xsd:complexType>

<xsd:unique name="Constraint1">

<xsd:selector xpath=".//suppliers" />

<xsd:field xpath="SupplierID" />

</xsd:unique>

<xsd:keyref name="Relation1" refer="Constraint1">

<xsd:selector xpath=".//products" />

<xsd:field xpath="SupplierID" />

</xsd:keyref>

</xsd:elements>

 </xsd:schema>

 <products>

<ProductID>1</ProductID>

<ProductName>Chai</ProductName>

<SupplierID>1</SupplierID>

<CategoryID>1</CategoryID>