CWA-Solutions for Data Exchange Settings with Target Dependencies
Summary: Extend Libkin's CWA-solutions to settings with target dependencies: for weakly acyclic targets the core is the unique minimal CWA-solution, and CWA-solutions and positive-query certain answers are PTIME-computable though maximal CWA-solutions may not be unique. Certain answers for CQs with one inequality are co-NP-hard; Existence-of-CWA-Solutions is PTIME for weakly acyclic settings but undecidable in general, implying undecidability of Existence-of-Universal-Solutions. (summarized by gpt-5-mini on Feb 09 2026)
Incoming Non-self Citations Over Time
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Incoming Citations (Sorted by Pagerank)
Showing 5 of 5 citing papers.
| Rank | Citing Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 1,570 | Update Exchange with Mappings and Provenance | 2007 | VLDB | 0.00010390225 |
| 4,285 | Chase Termination for Guarded Existential Rules | 2015 | PODS | 6.8535952e-05 |
| 4,363 | Data Exchange and Schema Mappings in Open and Closed Worlds | 2008 | PODS | 6.8104535e-05 |
| 5,002 | Normalization and Optimization of Schema Mappings | 2009 | VLDB | 6.4746872e-05 |
| 5,545 | Answering Aggregate Queries in Data Exchange | 2008 | PODS | 6.2399564e-05 |
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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 |
|---|---|---|---|---|
| 393 | Data Exchange: Getting to the Core | 2003 | PODS | 0.00019403954 |
| 501 | Schema Mappings, Data Exchange, and Metadata Management | 2005 | PODS | 0.00017463985 |
| 1,464 | Inverting Schema Mappings | 2006 | PODS | 0.00010774959 |
| 2,012 | XML Data Exchange: Consistency and Query Answering | 2005 | PODS | 9.389852e-05 |
| 3,049 | Data Exchange and Incomplete Information | 2006 | PODS | 7.8795234e-05 |
| 3,258 | Data Exchange: Computing Cores in Polynomial Time | 2006 | PODS | 7.6568057e-05 |
| 3,500 | The Complexity of Data Exchange | 2006 | PODS | 7.4337233e-05 |
| 4,246 | Locally Consistent Transformations and Query Answering in Data Exchange | 2004 | PODS | 6.8708244e-05 |
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Semantically Similar Papers
| Overall Rank | Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 4,363 | Data Exchange and Schema Mappings in Open and Closed Worlds | 2008 | PODS | 6.8104535e-05 |
| 4,246 | Locally Consistent Transformations and Query Answering in Data Exchange | 2004 | PODS | 6.8708244e-05 |
| 12,090 | Getting Unique Solution in Data Exchange | 2013 | VLDB | 5.1725247e-05 |
| 2,614 | Computing Cores for Data Exchange: New Algorithms and Practical Solutions | 2005 | PODS | 8.4084509e-05 |
| 5,545 | Answering Aggregate Queries in Data Exchange | 2008 | PODS | 6.2399564e-05 |
| 393 | Data Exchange: Getting to the Core | 2003 | PODS | 0.00019403954 |
| 3,258 | Data Exchange: Computing Cores in Polynomial Time | 2006 | PODS | 7.6568057e-05 |
| 2,496 | Peer Data Exchange | 2005 | PODS | 8.570746e-05 |
| 3,049 | Data Exchange and Incomplete Information | 2006 | PODS | 7.8795234e-05 |
| 3,500 | The Complexity of Data Exchange | 2006 | PODS | 7.4337233e-05 |