title: report on the 17th brazilian symposium on database systems ( sbbd 2002 ). authors: nina edelweiss , ana carolina salgado. venue: sigmod record. year: 2003.0
title: report on the 13th brazilian symposium on database systems ( sbbd ' 98 ) mario a. nascimento , claudia bauzer medeiros acm sigmod record. authors: nan. venue: nan. year: 1999.0