Sang-Kyun Kim Myungcheol Lee Kyu-Chul Lee Validation of XML Document Updates Based on XML Schema in XML Databases. 98-108 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2736&spage=98 2003 conf/dexa/2003 DEXA db/conf/dexa/dexa2003.html#KimLL03