Computer-Aided Design and Programming

Estimating unknown values in a database with incomplete information

V. A. Brudno

Moscow

Abstract: Two ways are discussed to estimate the values of the query expression in a relational database with incomplete corteges (the values of some whose attributes are not available). The estimates are derived as corollaries of constraints which are specified in the circuits.

UDC: 681.3.016


Received: 04.09.1986

 English version: Automation and Remote Control, 1988, 49:1, 114–119

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