Set-Theoretic Problems of Null Completion in Relational Databases

Arthur M. Keller. Set-Theoretic Problems of Null Completion in Relational Databases. Inf. Process. Lett., 22(5):261-265, 1986.

@article{Keller86:2,
  title = {Set-Theoretic Problems of Null Completion in Relational Databases},
  author = {Arthur M. Keller},
  year = {1986},
  tags = {relational database},
  researchr = {https://researchr.org/publication/Keller86%3A2},
  cites = {0},
  citedby = {0},
  journal = {Inf. Process. Lett.},
  volume = {22},
  number = {5},
  pages = {261-265},
}