Containment and Minimization of Positive Conjunctive Queries in OODB's (Extended Abstract)

Summary: Defines terminal conjunctive queries for OODBs and characterizes containment/equivalence, using schema typing to minimize object access. For positive CQs provides containment/equivalence characterization and an algorithm that computes exact minimizations as unions of terminal positive CQs with minimal variable space. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID: 966
Venue: PODS
Year: 1992
Pagerank: 8.7908999e-05
Overall Rank: 2,296 | 84.25%
DOI: 10.1145/137097.137869

Incoming Non-self Citations Over Time

Authors

1. Edward P. F. Chan (Institute for Robotics and Intelligent Systems; University of Waterloo)

BibTeX Citation

@inproceedings{chan_pods92,
        address = {New York, NY, USA},
        series = {{PODS} '92},
        title = {{Containment and Minimization of Positive Conjunctive Queries in OODB's (Extended Abstract)}},
        url = {https://dl.acm.org/doi/10.1145/137097.137869},
        doi = {10.1145/137097.137869},
        booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
        publisher = {Association for Computing Machinery},
        author = {Chan, Edward P. F.},
        year = {1992}
}

Incoming Citations (Sorted by Pagerank)

Showing 9 of 9 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
22	Data Integration: A Theoretical Perspective	2002	PODS	0.00056204792
1,630	On the Decidability of Query Containment under Constraints	1998	PODS	0.00010180625
1,777	Deciding Containment for Queries with Complex Objects (Extended Abstract)	1997	PODS	9.7849758e-05
2,114	Query Rewriting for Semistructured Data	1999	SIGMOD	9.1481121e-05
4,369	Semantic Query Optimization in the Presence of Types	2010	PODS	6.7390374e-05
6,310	Type Inference for Datalog and its Application to Query Optimisation	2008	PODS	5.9176726e-05
7,593	Query Containment in Entity SQL (Extended Abstract)	2013	SIGMOD	5.5893275e-05
12,030	Minimization of Tree Pattern Queries	2016	PODS	5.093636e-05
12,992	Applying an update method to a set of receivers (extended abstract)	1995	PODS	5.093636e-05

Outgoing Citations (Sorted by Pagerank)

Showing 9 of 9 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
10	Extending the Data Base Relational Model to Capture More Meaning	1979	SIGMOD	0.0007727299
355	Object Identity As A Query Language Primitive	1989	SIGMOD	0.00020351749
684	A Data Model and Query Language for EXODUS	1988	SIGMOD	0.00014990873
849	Object-Oriented Database Systems	1988	PODS	0.00013620915
971	ILOG: Declarative Creation and Manipulation of Object Identifiers	1990	VLDB	0.00012875736
1,228	A Model of Queries for Object-Oriented Databases	1989	VLDB	0.00011579246
2,754	Database Theory: Past and Future	1987	PODS	8.164514e-05
3,986	Type Systems for Querying Class Hierarchies with Non-strict Inheritance.	1989	PODS	6.9736679e-05
4,555	On the Equivalence of Database Restructurings Involving Object Identifiers	1991	PODS	6.6344715e-05

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