The Universal-Relation Data Model for Logical Independence

  • Authors:
  • Moshe Y. Vardi

  • Affiliations:
  • -

  • Venue:
  • IEEE Software
  • Year:
  • 1988

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Abstract

The universal-relation model is introduced, and its fundamental ideas are outlined. This model keeps access-path independence by removing the need for logical navigation among relations. One benefit is a simple yet powerful query-language interface. Two universal-relation database-management systems are discussed that provide good examples of the model: System/U, developed at Stanford University, and FIDL, developed at International Computers Ltd. in Britain.