A base type for million dollar figures:

<xs:simpleType base="FundingAmounts">
  <xs:restriction>
     <xs:minInclusive value="1000000" fixed="true"/>
  </xs:restriction>
</xs:simpleType>

Restricting a product code to 8 characters:

<xs:simpleType base="ProductCode">
  <xs:restriction>
     <xs:length value="8" fixed="true"/>
  </xs:restriction>
</xs:simpleType>