Incomplete information in a deductive database

M. Howard Williams, Qinzheng Kong

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


The problem of handling incomplete information efficiently has been studied in the context of relational databases by various workers. However, dealing with incomplete information in a deductive database is a more difficult problem. This paper discusses the problem of interpretation of incomplete information in a deductive database and puts forward a model to assist in understanding the different interpretations and their effect on the evaluation of queries. © 1988.

Original languageEnglish
Pages (from-to)197-220
Number of pages24
JournalData and Knowledge Engineering
Issue number3
Publication statusPublished - Nov 1988


  • Deductive database
  • Incomplete information


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