Universal Relation Database Systems.

Abstract

The query facility for their universal relation database system is now working. The fundamental paper unifying ideas on what a UR system can and should be has been published. A paper surveying developments in the field of universal relation systems was invited for the triennial IFIP Congress and was delivered in September. Some initial results on logical theories applied to the problem of updating views have been obtained. There have been a number of developments concerning inference of inclusion dependencies and on the complexity of deciding certain properties of data base schemes. Some interesting results on the difficulty of obtaining hash functions that work well for particular sets of data have been obtained and won an award. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1983
Accession Number
ADA135707

Entities

People

  • J. D. Ullman

Organizations

  • Stanford University

Tags

Communities of Interest

  • Counter IED
  • Human Systems

DTIC Thesaurus Topics

  • Air Force
  • Buildings And Structures
  • Classification
  • Computer Science
  • Congress
  • Data Sets
  • Databases
  • Digital Data
  • Digital Information
  • Governments
  • Inclusions
  • Information Science
  • National Governments
  • Scientific Research
  • Security
  • Students

Fields of Study

  • Computer science

Readers

  • Academic Conference Management
  • Database Systems and Applications
  • Systems Analysis and Design

Technology Areas

  • AI & ML
  • AI & ML - Information Retrieval