title: dblearn : a system prototype for knowledge discovery in relational databases. authors: yue huang , yandong cai , yongjian fu , nick cercone , jiawei han. venue: sigmod conference. year: 1994
title: semint : a system prototype for semantic integration in heterogeneous databases. authors: wen-syan li , chris clifton. venue: international conference on management of data. year: 1995