HAS, a relational algebra operator or divide is not enough to conquer

John V. Carlis

doi:10.1109/ICDE.1986.7266229

HAS, a relational algebra operator or divide is not enough to conquer

John V. Carlis

Computer Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

12 Scopus citations

Abstract

The relational algebra operator division is misnamed, hard to understand and insufficient. This paper explains division and presents HAS, a generalization of division which is useful for answering questions about an M-M relationship between entities.

Original language	English (US)
Article number	7266229
Pages (from-to)	254-261
Number of pages	8
Journal	Proceedings - International Conference on Data Engineering
Volume	2015-January
DOIs	https://doi.org/10.1109/ICDE.1986.7266229
State	Published - Jan 1 1986
Event	2nd IEEE International Conference on Data Engineering, COMPDEC 1986 - Los Angeles, United States Duration: Feb 5 1986 → Feb 7 1986

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10.1109/ICDE.1986.7266229

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title = "HAS, a relational algebra operator or divide is not enough to conquer",

abstract = "The relational algebra operator division is misnamed, hard to understand and insufficient. This paper explains division and presents HAS, a generalization of division which is useful for answering questions about an M-M relationship between entities.",

author = "Carlis, {John V.}",

year = "1986",

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