<constraint_name_list xmlns="http://www.sqlparser.com/xml/ansi2003"> <kw_all>{1,1}</kw_all> <constraint_name>{1,unbounded}</constraint_name> </constraint_name_list>
<xs:element name="constraint_name_list"> <xs:complexType> <xs:choice> <xs:element ref="kw_all"/> <xs:element ref="constraint_name" maxOccurs="unbounded"/> </xs:choice> </xs:complexType> </xs:element>