Multirelations - Semantics and Languages

Summary: Multirelations are viewed as a subset of a duplicate-free base relation's columns, not independent data objects. Duplicates and multirelational ops are disallowed conceptually; multirelational output is specified by projecting a column subset, while aggregates apply to a single column, with QUEL extended for full multirelational expressiveness. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: 7705
Venue: VLDB
Year: 1985
Pagerank: 7.1731086e-05
Overall Rank: 3,364 | 76.60%
DOI: -

Incoming Non-self Citations Over Time

Authors

1. Aviel Klausner
2. Nathan Goodman

Incoming Citations (Sorted by Pagerank)

Showing 6 of 6 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
481	Incremental Maintenance of Views with Duplicates	1995	SIGMOD	0.00022167223
603	A Data Model and Query Language for EXODUS	1988	SIGMOD	0.00019351031
2,395	Algebraic Properties of Bag Data Types	1991	VLDB	8.8998019e-05
2,546	Towards Tractable Algebras for Bags (Extended Abstract)	1993	PODS	8.5701687e-05
12,901	A Uniform Approach to Processing Temporal Queries	1992	VLDB	4.1945683e-05
12,990	Query Optimization By Stored Queries	1987	VLDB	4.1945683e-05

Outgoing Citations (Sorted by Pagerank)

Showing 3 of 3 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank
12	The Functional Data Model and the Data Language DAPLEX	1979	SIGMOD	0.0011248121
38	Testing Implications Of Data Dependencies	1979	SIGMOD	0.00075110004
837	An Extended Relational Algebra with Control Over Duplicate Elimination	1982	PODS	0.00016097758

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4,413	Toward Logical Data Independence: A Relational Query Language without Relations	1982	SIGMOD	6.205847e-05
481	Incremental Maintenance of Views with Duplicates	1995	SIGMOD	0.00022167223
975	Algebraic Support for Complex Objects with Arrays, Identity, and Inheritance	1991	SIGMOD	0.00014893961
170	A Complete Axiomatization For Functional And Multivalued Dependencies In Database Relations	1977	SIGMOD	0.0003886136
1,039	Compatible Attributes In A Universal Relation	1982	PODS	0.00014489585
5,498	Translating and Optimizing SQL Queries Having Aggregates	1987	VLDB	5.4750555e-05
837	An Extended Relational Algebra with Control Over Duplicate Elimination	1982	PODS	0.00016097758
445	The Magic of Duplicates and Aggregates	1990	VLDB	0.0002294367
1,754	Querying Multiple Features of Groups in Relational Databases	1996	VLDB	0.00010670609