Representing imprecise information in NF2 relations

Research output: Contribution to journalConference articlepeer-review


A model which can represent imprecise information and store it as an extension of normal-form (NF2) relations with one level of nesting is proposed. It is shown by example that the model is more general than the ordinary NF2 relational model. This generality is accomplished by an operator that can manipulate imprecise data and precise data and can have the same properties as the nest and the pack operators defined for NF2 relations. This operator, called the merge operator, is defined. A representation framework for representing incomplete data, including range values and various null values, is also proposed.

Original languageEnglish
Pages (from-to)1026-1030
Number of pages5
JournalConference Proceedings - IEEE SOUTHEASTCON
Publication statusPublished - Dec 1 1990
Externally publishedYes
EventIEEE Proceedings of Southeastcon '90 - Technologies Today and Tomorrow - New Orleans, LA, USA
Duration: Apr 1 1990Apr 4 1990

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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