examples of restrictions in XSDs

1. <xs:element name="MyString" minOccurs="0">
      <xs:simpleType>
         <xs:restriction base="xs:string">
            <xs:pattern value="^[^a-z]+$"/>
            <xs:minLength value="1"/>
            <xs:maxLength value="25"/>
         </xs:restriction>
      </xs:simpleType>
   </xs:element>
2. <xs:element name="MyIntegerInStringForm" minOccurs="0">
      <xs:simpleType>
         <xs:restriction base="xs:string">
            <xs:pattern value="[0-9]{7}"></xs:pattern>
         </xs:restriction>
      </xs:simpleType>
   </xs:element>
3. <xs:element name="MyDateTimeInStringForm">
      <xs:simpleType>
         <xs:restriction base="xs:dateTime"/>
      </xs:simpleType>
   </xs:element>