Specifying Dynamic and Deontic Integrity Constraints

@article{Wieringa1989SpecifyingDA,
  title={Specifying Dynamic and Deontic Integrity Constraints},
  author={Roel Wieringa and John-Jules Ch. Meyer and Hans Weigand},
  journal={Data Knowl. Eng.},
  year={1989},
  volume={4},
  pages={157-189}
}
In the dominant view of knowledge bases (KB's), a KB is a set of facts (atomic sentences) and integrity constraints (IC's). An IC is then a sentence which must at least be consistent with the other sentences in the KB. This view obliterates the distinction between, for example, the constraint that age is a natural number (which is true of the universe of discourse (UoD) but may be false in a particular implementation of a KB), and the constraint that a class must have precisely one teacher… CONTINUE READING

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