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@article{DBLP:journals/sigmod/Codd09,
author = {E. F. Codd},
title = {Derivability, redundancy and consistency of relations stored
in large data banks},
journal = {SIGMOD Record},
volume = {38},
number = {1},
year = {2009},
pages = {17-36},
ee = {http://doi.acm.org/10.1145/1558334.1558336},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
Copyright © 2009-06-30 by Michael Ley (ley@uni-trier.de)