The 3rd Eastern European Conference on Advances in Databases and Information Systems (ADBIS 99) took place on 13-16- September 1999, in Maribor, Slovenia. It was organized in cooperation with ACM SIGMOD, the Moscow chapter of ACM SIGMOD, Slovenian Society Informatika, and the Slovenian Ministry of Technology. The aim of the ADBIS series of conferences is to provide a forum for the exchange of scientific achievements and experiences using innovative methods and approaches between the research communities of Central and Eastern Europe and the rest of the world in the area of databases and...