Accessing Data Integration Systems through Conceptual Schemas Andrea Calì, Diego Calvanese, Giuseppe De Giacomo, and Maurizio Lenzerini   View Paper (PDF)   Return to Data Integration BIBTEX @inproceedings       {DBLP:conf/er/CaliCGL01,   author    = {Andrea Calì and                 Diego Calvanese and                 Giuseppe De Giacomo and                 Maurizio Lenzerini},    booktitle = {ER},    title     = {Accessing Data Integration Systems through Conceptual Schemas.},    pages     = {270-284},    year      = {2001},    url       = {db/conf/er/er2001.html#CaliCGL01},    ee        = {http://link.springer.de/link/service/series/0558/bibs/2224/22240270.htm},    crossref  = {conf/er/2001},    bibsource = {DBLP, http://dblp.uni-trier.de}  } ©2004 Association for Computing Machinery