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A Dichotomy in Consistent Query Answering for Primary Keys and Unary Foreign Keys

Summary: Dichotomy for CERTAINTY(q) with primary keys plus unary foreign keys under symmetric-difference (XOR) repairs for self-join-free conjunctive queries: either admits a FO rewriting or not. Provides precise structural characterization separating the two cases. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID
1849
Venue
PODS
Year
2022
Pagerank
4.1945683e-05
Overall Rank
11,325 | 21.22%
DOI
10.1145/3517804.3524157

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Incoming Citations (Sorted by Pagerank)

Showing 2 of 2 citing papers.

Rank Citing Paper Year Venue Pagerank
10,899 Consistent Query Answering for Primary Keys on Rooted Tree Queries 2024 PODS 4.1945683e-05
10,928 Computing Range Consistent Answers to Aggregation Queries via Rewriting 2024 PODS 4.1945683e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 12 of 12 cited papers.

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

Rank Cited Paper Year Venue Pagerank
49 Consistent Query Answers in Inconsistent Databases 1999 PODS 0.00067660624
144 Testing Containment of Conjunctive Queries Under Functional and Inclusion Dependencies (Extended Abstract) 1982 PODS 0.00041462501
678 ConQuer: Efficient Management of Inconsistent Databases 2005 SIGMOD 0.00018253213
2,243 The Data Complexity of Consistent Query Answering for Self-Join-Free Conjunctive Queries Under Primary Key Constraints 2015 PODS 9.2166927e-05
2,566 Database Repairs and Consistent Query Answering: Origins and Further Developments 2019 PODS 8.5243847e-05
3,524 Efficient Querying of Inconsistent Databases with Binary Integer Programming 2013 VLDB 7.0087032e-05
5,360 Counting Database Repairs under Primary Keys Revisited 2019 PODS 5.5481038e-05
5,389 ConQuer : A System for Efficient Querying Over Inconsistent Databases 2005 VLDB 5.5368328e-05
6,739 Benchmarking Approximate Consistent Query Answering 2021 PODS 4.9449088e-05
7,063 On the First-order Expressibility of Computing Certain Answers to Conjunctive Queries over Uncertain Databases 2010 PODS 4.8461152e-05
7,069 Consistent Query Answering for Primary Keys on Path Queries 2021 PODS 4.8438319e-05
8,970 First-Order Rewritability in Consistent Query Answering with Respect to Multiple Keys 2020 PODS 4.4188963e-05
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10,899 Consistent Query Answering for Primary Keys on Rooted Tree Queries 2024 PODS 4.1945683e-05
2,243 The Data Complexity of Consistent Query Answering for Self-Join-Free Conjunctive Queries Under Primary Key Constraints 2015 PODS 9.2166927e-05
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