make xsd schema validate this xml

[akosz]

In the following XML I want to require the USER and SEARCH_KEY nodes, but not the TRANSACTION_DATA or SEARCH_RESULT nodes. I am having trouble building an XSD schema that will do this without any side effects:



<XYZ_TRANSACTION>

<USER>
<USER_ID>testuser</USER_ID>
<PASSWORD>testpassword</PASSWORD>
</USER>

<TRANSACTION_DATA>
<TRANSACTION_ID>999</TRANSACTION_ID>
<TRANSACTION_DATE>02/23/2004</TRANSACTION_DATE>
</TRANSACTION_DATA>

<SEARCH_KEY>
<ID_NUMBER>123456789</ID_NUMBER>
</SEARCH_KEY>

<SEARCH_RESULT>
<STREETA>123 MAIN STREET</STREETA>
<CITY>NEW YORK</CITY>
<ZIP_CODE>10030</ZIP_CODE>
</SEARCH_RESULT>

</XYZ_TRANSACTION>

[crh3675]

You can tweak this:

<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                      targetNamespace="http://url_of_this_file_without_file_name"
                      xmlns="http://url_of_this_file_without_file_name">  
	<xsd:element name="XYZ_TRANSACTION"> 
	  <xsd:complexType>
	    <xsd:sequence>
	      <xsd:element ref="USER" minOccurs="1" maxOccurs="1" use="required"/>
	      <xsd:element ref="TRANSACTION_DATA" minOccurs="1" maxOccurs="1" use="required"/>
	      <xsd:element ref="SEARCH_KEY" minOccurs="1" maxOccurs="1" use="implied"/>
	      <xsd:element ref="SEARCH_RESULT" minOccurs="1" maxOccurs="1" use="implied"/>
	    </xsd:sequence>
	  </xsd:complexType>
	</xsd:element>

	<xsd:element name="USER">
	  <xsd:complexType>
	    <xsd:sequence>
	      <xsd:element ref="USER_ID" minOccurs="1" maxOccurs="1" use="required"/>
	      <xsd:element ref="PASSWORD" minOccurs="1" maxOccurs="1" use="required"/>
	    </xsd:sequence>
	  </xsd:complexType>
	</xsd:element>

	<xsd:element name="TRANSACTION_DATA">
	  <xsd:complexType>
	    <xsd:sequence>
	      <xsd:element ref="TRANSACTION_ID" minOccurs="1" maxOccurs="1"/>
	      <xsd:element ref="TRANSACTION_DATE" minOccurs="1" maxOccurs="1"/>
	    </xsd:sequence>
	  </xsd:complexType>
	</xsd:element>

	<xsd:element name="SEARCH_KEY">
	  <xsd:complexType>
	      <xsd:element ref="ID_NUMBER" minOccurs="1" maxOccurs="1" use="required"/>
	  </xsd:complexType>
	</xsd:element>

	<xsd:element name="SEARCH_RESULT">
	  <xsd:complexType>
	    <xsd:sequence>
	      <xsd:element ref="STREETA" minOccurs="1" maxOccurs="1"/>
	      <xsd:element ref="CITY" minOccurs="1" maxOccurs="1"/>
	      <xsd:element ref="ZIP_CODE" minOccurs="1" maxOccurs="1"/>
	    </xsd:sequence>
	  </xsd:complexType>
	</xsd:element>

	<xsd:element name="USER_ID" type="xsd:string"/> 
	<xsd:element name="PASSWORD" type="xsd:string"/>
	<xsd:element name="TRANSACTION_ID" type="xsd:integer"/>
	<xsd:element name="TRANSACTION_DATE" type="xsd:string"/>
	<xsd:element name="ID_NUMBER" type="xsd:integer"/>
	<xsd:element name="STREETA" type="xsd:string"/>
	<xsd:element name="CITY" type="xsd:string"/>
	<xsd:element name="ZIP_CODE" type="xsd:string"/>
</xsd:schema>