DongWoo Lee SeongHoon Lee Chong-Sun Hwang Application of Active Database Abstraction in B2B E-Commerce. 17-20 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3320&spage=17 2004 conf/pdcat/2004 PDCAT db/conf/pdcat/pdcat2004.html#LeeLH04