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 |
|---|---|---|---|---|
| 1,868 | Update Exchange with Mappings and Provenance | 2007 | VLDB | 0.0001026365 |
| 3,913 | Chase Termination for Guarded Existential Rules | 2015 | PODS | 6.6311557e-05 |
| 4,468 | Data Exchange and Schema Mappings in Open and Closed Worlds | 2008 | PODS | 6.1543925e-05 |
| 4,750 | Normalization and Optimization of Schema Mappings | 2009 | VLDB | 5.9424107e-05 |
| 5,901 | Answering Aggregate Queries in Data Exchange | 2008 | PODS | 5.2791434e-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 |
|---|---|---|---|---|
| 493 | Data Exchange: Getting to the Core | 2003 | PODS | 0.00021782199 |
| 620 | Schema Mappings, Data Exchange, and Metadata Management | 2005 | PODS | 0.00018983367 |
| 1,493 | Inverting Schema Mappings | 2006 | PODS | 0.00011682325 |
| 2,217 | XML Data Exchange: Consistency and Query Answering | 2005 | PODS | 9.2682054e-05 |
| 3,426 | Data Exchange: Computing Cores in Polynomial Time | 2006 | PODS | 7.1040993e-05 |
| 3,507 | Data Exchange and Incomplete Information | 2006 | PODS | 7.0299158e-05 |
| 3,647 | The Complexity of Data Exchange | 2006 | PODS | 6.8796285e-05 |
| 4,707 | Locally Consistent Transformations and Query Answering in Data Exchange | 2004 | PODS | 5.9773898e-05 |
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Semantically Similar Papers
| Overall Rank | Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 4,468 | Data Exchange and Schema Mappings in Open and Closed Worlds | 2008 | PODS | 6.1543925e-05 |
| 4,707 | Locally Consistent Transformations and Query Answering in Data Exchange | 2004 | PODS | 5.9773898e-05 |
| 12,090 | Getting Unique Solution in Data Exchange | 2013 | VLDB | 4.1905499e-05 |
| 2,835 | Computing Cores for Data Exchange: New Algorithms and Practical Solutions | 2005 | PODS | 8.0468415e-05 |
| 5,901 | Answering Aggregate Queries in Data Exchange | 2008 | PODS | 5.2791434e-05 |
| 493 | Data Exchange: Getting to the Core | 2003 | PODS | 0.00021782199 |
| 3,426 | Data Exchange: Computing Cores in Polynomial Time | 2006 | PODS | 7.1040993e-05 |
| 2,719 | Peer Data Exchange | 2005 | PODS | 8.2355137e-05 |
| 3,507 | Data Exchange and Incomplete Information | 2006 | PODS | 7.0299158e-05 |
| 3,647 | The Complexity of Data Exchange | 2006 | PODS | 6.8796285e-05 |