title: rainbow : mapping-driven xquery processing system sigmod conference. authors: mukesh mulchandani , elke a. rundensteiner , xin zhang , brian murphy , steffen christ. venue: nan. year: 2002.0
title: fact : a learning based web query processing system songting chen , yanlei diao , hongjun lu , zengping tian international conference on management of data. authors: nan. venue: nan. year: 2000.0