<role_specification xmlns="http://www.sqlparser.com/xml/ansi2003"> <value_specification>{1,1}</value_specification> <kw_none>{1,1}</kw_none> </role_specification>
<xs:element name="role_specification"> <xs:complexType> <xs:choice> <xs:element ref="value_specification"/> <xs:element ref="kw_none"/> </xs:choice> </xs:complexType> </xs:element>