Extremal Fitting Problems for Conjunctive Queries
Summary: Defines extremal refinements of CQ fitting (most-general, most-specific, unique) and gives constructive characterizations via homomorphism dualities, frontiers, and direct products. Determines complexity and size bounds for existence/verification and extends results to UCQs and tree CQs. (summarized by gpt-5-mini on Feb 09 2026)
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Authors
- 1. Balder ten Cate (University of Amsterdam)
- 2. Victor Dalmau (Pompeu Fabra University)
- 3. Maurice Funk (University of Leipzig)
- 4. Carsten Lutz (University of Leipzig)
BibTeX Citation
@inproceedings{cate_pods23,
address = {New York, NY, USA},
series = {{PODS} '23},
title = {{Extremal Fitting Problems for Conjunctive Queries}},
url = {https://dl.acm.org/doi/10.1145/3584372.3588655},
doi = {10.1145/3584372.3588655},
booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
publisher = {Association for Computing Machinery},
author = {Cate, Balder ten and Dalmau, Victor and Funk, Maurice and Lutz, Carsten},
year = {2023}
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Outgoing Citations (Sorted by Pagerank)
Showing 6 of 6 cited papers.
Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 1,192 | Query From Examples: An Iterative, Data-Driven Approach to Query Construction | 2015 | VLDB | 0.00011740132 |
| 2,215 | Characterizing Schema Mappings via Data Examples | 2010 | PODS | 8.93781e-05 |
| 3,341 | Designing and Refining Schema Mappings via Data Examples | 2011 | SIGMOD | 7.5028917e-05 |
| 5,347 | Ontology-based Data Access: A Study through Disjunctive Datalog, CSP, and MMSNP | 2013 | PODS | 6.2571376e-05 |
| 5,804 | A Relational Framework for Classifier Engineering | 2017 | PODS | 6.0829486e-05 |
| 11,833 | Regularizing Conjunctive Features for Classification | 2019 | PODS | 5.093636e-05 |
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