Nagappan

<?xml version="1.0" encoding="utf-16"?><xs:schema id="dataset" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">  <xs:element name="dataset" msdata:IsDataSet="true" msdata:MainDataTable="table1" msdata:UseCurrentLocale="true">    <xs:complexType>      <xs:choice minOccurs="0" maxOccurs="unbounded">        <xs:element name="table1">          <xs:complexType>            <xs:sequence>              <xs:element name="col" type="xs:string" minOccurs="0" />            </xs:sequence>          </xs:complexType>        </xs:element>      </xs:choice>    </xs:complexType>    <xs:unique name="Constraint1">      <xs:selector xpath=".//table1" />      <xs:field xpath="col" />    </xs:unique>  </xs:element></xs:schema><?xml version="1.0" encoding="utf-16"?><xs:schema id="dataset" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">  <xs:element name="dataset" msdata:IsDataSet="true" msdata:MainDataTable="table2" msdata:UseCurrentLocale="true">    <xs:complexType>      <xs:choice minOccurs="0" maxOccurs="unbounded">        <xs:element name="table2">          <xs:complexType>            <xs:sequence>              <xs:element name="col" type="xs:string" minOccurs="0" />            </xs:sequence>          </xs:complexType>        </xs:element>      </xs:choice>    </xs:complexType>    <xs:keyref name="rel" refer="Constraint1" msdata:ConstraintOnly="true">      <xs:selector xpath=".//table2" />      <xs:field xpath="col" />    </xs:keyref>  </xs:element></xs:schema>