Open Problems in Database Theory.

@inproceedings{DBLP:conf/mfdbs/Thalheim87a,
  author    = {Bernhard Thalheim},
  editor    = {Joachim Biskup and
               J{\'a}nos Demetrovics and
               Jan Paredaens and
               Bernhard Thalheim},
  title     = {Open Problems in Database Theory},
  booktitle = {MFDBS 87, 1st Symposium on Mathematical Fundamentals of Database
               Systems, Dresden, GDR, January 19-23, 1987, Proceedings},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {305},
  year      = {1987},
  isbn      = {3-540-19121-6},
  pages     = {241-247},
  ee        = {db/conf/mfdbs/Thalheim87a.html},
  crossref  = {DBLP:conf/mfdbs/87},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

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Referenced by

1. János Demetrovics, Leonid Libkin, Ilya B. Muchnik: Functional Dependencies and the Semilattice of Closed Classes. MFDBS 1989: 136-147