db/journals/dpd/KimCGS93.html Won Kim Injun Choi Sunit K. Gala Mark Scheevel On Resolving Schematic Heterogeneity in Multidatabase Systems. 251-279 DPD/1/P251.pdf 1993 1 Distributed and Parallel Databases 3 db/journals/dpd/dpd1.html#KimCGS93