Thanh N. Huynh Oscar Mangisengi A. Min Tjoa Metadata for object-relational data warehouse. 3 2000 conf/dmdw/2000 DMDW http://SunSITE.Informatik.RWTH-Aachen.DE/Publications/CEUR-WS/Vol-28/paper3.pdf db/conf/dmdw/dmdw2000.html#HuynhMT00