On The Expressive Power Of The Extended Relational Algebra For The Unnormalized Relational Model

Summary: Shows extended relational algebra with NEST/UNNEST is BP-complete (boundedness + expressiveness) over the unnormalized (non-1NF) model. Characterizes BP-boundedness/expressiveness via invariance under database transformations, generalizing classical completeness. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID: 805
Venue: PODS
Year: 1987
Pagerank: 5.6109061e-05
Overall Rank: 5,238 | 63.57%
DOI: -

Incoming Non-self Citations Over Time

Authors

1. Dirk Van Gucht

Incoming Citations (Sorted by Pagerank)

Showing 4 of 4 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
1,448	Theory of Database Queries (Extended Abstract)	1988	PODS	0.00011938045
2,110	A Recursive Algebra and Query Optimization for Nested Relations	1989	SIGMOD	9.5315487e-05
3,392	The Powerset Algebra As A Result Of Adding Programming Constructs To The Nested Relational Algebra	1988	SIGMOD	7.1485699e-05
12,833	Adding Disjunction to Datalog (Extended Abstract)	1994	PODS	4.1945683e-05

Outgoing Citations (Sorted by Pagerank)

Showing 10 of 10 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
384	Data Structures for an Integrated Data Base Management and Information Retrieval System	1982	VLDB	0.00024797165
422	Non First Normal Form Relations To Represent Hierarchically Organized Data	1984	PODS	0.00023677809
485	A New Approach to Database Logic	1984	PODS	0.00022085103
580	On An Algebra For Historical Relational Databases. Two Views	1985	SIGMOD	0.00019786623
1,052	A Normal Form for Nested Relations	1985	PODS	0.00014436103
1,898	On Line Processing Of Compacted Relations	1982	VLDB	0.00010175799
2,744	Determining When A Structure Is A Nested Relation	1985	VLDB	8.1896577e-05
5,679	Weak Multivalued Dependencies+	1984	PODS	5.3739358e-05
7,103	A Model for Integrated Information Systems	1983	VLDB	4.8304812e-05
12,994	Some Classes of Multilevel Relational Structures (Extended Abstract)	1986	PODS	4.1945683e-05

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2,546	Towards Tractable Algebras for Bags (Extended Abstract)	1993	PODS	8.5701687e-05
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97	Remarks on the Algebra of Non First Normal Form Relations	1982	PODS	0.0005080702