DB2 9 can validate the XML document at the time of import against a registered XML schema. To validate your XML data when importing into DB2 relational table, in addition to a data file, you also require an XML schema to be used for validation.
pureXMl supports flexible schema where there is no need for a fixed schema per XML column. You can use 0 or 1 or more schemas per XML column. Even if these schemas are conflicting for different columns, you can still use these schemas within an XML column.