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The universal-relation data model for logical independence

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1 Author(s)
Vardi, M.Y. ; IBM Almaden Res. Center, San Jose, CA, USA

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.<>

Published in:

Software, IEEE  (Volume:5 ,  Issue: 2 )