Constraints: Consistency and Integrity.

@article{DBLP:journals/sigmod/Sinha83,
  author    = {Mukul K. Sinha},
  title     = {Constraints: Consistency and Integrity},
  journal   = {SIGMOD Record},
  volume    = {13},
  number    = {2},
  year      = {1983},
  pages     = {60-63},
  ee        = {http://doi.acm.org/10.1145/984523.984528, db/journals/sigmod/Sinha83.html},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

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