Data Exchange: Computing Cores in Polynomial Time
Summary: Polynomial-time algorithms to compute the core of a universal solution for data-exchange instances with arbitrary source-to-target TGDs and target EGDs plus weakly-acyclic TGDs, resolving a longstanding open problem. Establishes feasibility of the core approach via new efficient techniques. (summarized by gpt-5-mini on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. Georg Gottlob (University of Oxford)
- 2. Alan Nash (University of California San Diego)
BibTeX Citation
@inproceedings{gottlob_pods06,
address = {New York, NY, USA},
series = {{PODS} '06},
title = {{Data Exchange: Computing Cores in Polynomial Time}},
url = {https://dl.acm.org/doi/10.1145/1142351.1142358},
doi = {10.1145/1142351.1142358},
booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
publisher = {Association for Computing Machinery},
author = {Gottlob, Georg and Nash, Alan},
year = {2006}
}Incoming Citations (Sorted by Pagerank)
Showing 9 of 9 citing papers.
| Rank | Citing Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 539 | The Chase Revisited | 2008 | PODS | 0.0001672793 |
| 1,575 | Generalized Schema-Mappings: From Termination To Tractability | 2009 | PODS | 0.00010189889 |
| 3,019 | The Recovery of a Schema Mapping: Bringing Exchanged Data Back | 2008 | PODS | 7.7434413e-05 |
| 3,614 | On Reconciling Data Exchange, Data Integration, and Peer Data Management | 2007 | PODS | 7.1572016e-05 |
| 4,706 | Towards a Theory of Schema-Mapping Optimization | 2008 | PODS | 6.4574226e-05 |
| 4,752 | DEMo: Data Exchange Modeling Tool | 2009 | VLDB | 6.4340354e-05 |
| 4,897 | CWA-Solutions for Data Exchange Settings with Target Dependencies | 2007 | PODS | 6.363076e-05 |
| 5,751 | Answering Aggregate Queries in Data Exchange | 2008 | PODS | 6.0044594e-05 |
| 9,069 | Understanding Queries by Conditional Instances | 2022 | SIGMOD | 5.2265129e-05 |
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Outgoing Citations (Sorted by Pagerank)
Showing 4 of 4 cited papers.
Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 41 | Testing Implications Of Data Dependencies | 1979 | SIGMOD | 0.00045878061 |
| 392 | Data Exchange: Getting to the Core | 2003 | PODS | 0.00019215652 |
| 517 | Schema Mappings, Data Exchange, and Metadata Management | 2005 | PODS | 0.0001694094 |
| 2,596 | Computing Cores for Data Exchange: New Algorithms and Practical Solutions | 2005 | PODS | 8.2387266e-05 |
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| # | Overall Rank | Paper | Year | Venue |
|---|---|---|---|---|
| 1 | 2,101 | XML Data Exchange: Consistency and Query Answering | 2005 | PODS |
| 2 | 12,398 | Recovering Exchanged Data | 2015 | PODS |
| 3 | 7,073 | Laconic Schema Mappings: Computing the Core with SQL Queries | 2009 | VLDB |
| 4 | 4,897 | CWA-Solutions for Data Exchange Settings with Target Dependencies | 2007 | PODS |
| 5 | 5,177 | Scalable Data Exchange with Functional Dependencies | 2010 | VLDB |
| 6 | 2,554 | Peer Data Exchange | 2005 | PODS |
| 7 | 4,281 | Core Schema Mappings | 2009 | SIGMOD |
| 8 | 3,564 | The Complexity of Data Exchange | 2006 | PODS |
| 9 | 392 | Data Exchange: Getting to the Core | 2003 | PODS |
| 10 | 2,596 | Computing Cores for Data Exchange: New Algorithms and Practical Solutions | 2005 | PODS |