Data Exchange: Getting to the Core
Summary: Core of any universal solution is unique (up to isomorphism), is the minimal universal solution, and optimally answers unions of conjunctive queries with inequalities. Complexity: core computation NP-hard in general and core-recognition DP-complete; provide broad data-exchange conditions yielding polynomial-time construction. (summarized by gpt-5-mini on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. Ronald Fagin (IBM)
- 2. Phokion G. Kolaitis (University of California Santa Cruz)
- 3. Lucian Popa (IBM)
BibTeX Citation
@inproceedings{fagin_pods03,
address = {New York, NY, USA},
series = {{PODS} '03},
title = {{Data Exchange: Getting to the Core}},
url = {https://dl.acm.org/doi/10.1145/773153.773163},
doi = {10.1145/773153.773163},
booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
publisher = {Association for Computing Machinery},
author = {Fagin, Ronald and Kolaitis, Phokion G. and Popa, Lucian},
year = {2003}
}Incoming Citations (Sorted by Pagerank)
Showing 50 of 55 citing papers.
Outgoing Citations (Sorted by Pagerank)
Showing 8 of 8 cited papers.
Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 24 | Data Integration: A Theoretical Perspective | 2002 | PODS | 0.00055043581 |
| 41 | Testing Implications Of Data Dependencies | 1979 | SIGMOD | 0.00045899672 |
| 182 | Schema Mapping as Query Discovery | 2000 | VLDB | 0.00026277842 |
| 238 | Complexity of Answering Queries Using Materialized Views | 1998 | PODS | 0.00023591683 |
| 426 | Translating Web Data | 2002 | VLDB | 0.00018483901 |
| 1,503 | The Complexity of Evaluating Relational Queries | 1983 | PODS | 0.00010455233 |
| 2,098 | Functional and Inclusion Dependencies: A Graph Theoretic Approach | 1984 | PODS | 9.0521246e-05 |
| 2,226 | Physical Data Independence, Constraints, and Optimization with Universal Plans | 1999 | VLDB | 8.8033052e-05 |
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