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Complex Text-only Element can only have text and attribute, but no content. See the following example −

<marks grade = "A" >90</student>

We can declare Complex Text-only elements using the following methods −

Use SimpleContent

Define complexType with simpleContent. SimpleContent can use extension/restriction element to increase/reduce scope of base type of the element. Create an element of defined complexType using type attribute.

<xs:element name = "marks" type = "marksType"/>

<xs:complexType name = "marksType">
   <xs:simpleContent>
      <xs:extension base = "xs:integer">
         <xs:attribute name = "grade" type = "xs:string" />
      </xs:extension>
   </xs:simpleContent>
</xs:complexType>

Use ComplexType alone

Define an element of complexType with the required attribute element only.

<xs:element name = "marks">
   <xs:complexType>
      <xs:simpleContent>
         <xs:extension base = "xs:integer">
            <xs:attribute name = "grade" type = "xs:string" />
         </xs:extension>
      </xs:complexContent>
   </xs:complexType>
</xs:element>