Two-Variable Logic on Data Trees and XML Reasoning
Summary: Decidability of FO^2 satisfiability over data trees when navigation is restricted to child and next-sibling and data comparisons are equality-only. Implies decidability of satisfiability/containment for a data-aware XPath fragment and of implication for unary key/inclusion constraints. (summarized by gpt-5-mini on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. Mikołaj Bojańczyk
- 2. Claire David
- 3. Anca Muscholl
- 4. Thomas Schwentick
- 5. Luc Segoufin
Incoming Citations (Sorted by Pagerank)
Showing 5 of 5 citing papers.
| Rank | Citing Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 5,651 | GPC: A Pattern Calculus for Property Graphs | 2023 | PODS | 5.3905536e-05 |
| 8,190 | XML Schema Mappings | 2009 | PODS | 4.5641911e-05 |
| 12,292 | The Finite Model Theory Toolbox of a Database Theoretician | 2009 | PODS | 4.1945683e-05 |
| 12,296 | Satisfiability of Downward XPath with Data Equality Tests | 2009 | PODS | 4.1945683e-05 |
| 12,434 | Reasoning about XML Update Constraints | 2007 | PODS | 4.1945683e-05 |
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Outgoing Citations (Sorted by Pagerank)
Showing 3 of 3 cited papers.
Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 713 | Efficient Algorithms for Processing XPath Queries | 2002 | VLDB | 0.00017731096 |
| 1,929 | XPath Satisfiability in the Presence of DTDs | 2005 | PODS | 0.00010058897 |
| 3,427 | XML with Data Values: Typechecking Revisited | 2001 | PODS | 7.1033924e-05 |
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Semantically Similar Papers
| Overall Rank | Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 5,296 | Running Tree Automata on Probabilistic XML | 2009 | PODS | 5.5802694e-05 |
| 9,105 | Decidable XPath Fragments in the Real World | 2019 | PODS | 4.3953995e-05 |
| 3,427 | XML with Data Values: Typechecking Revisited | 2001 | PODS | 7.1033924e-05 |
| 12,434 | Reasoning about XML Update Constraints | 2007 | PODS | 4.1945683e-05 |
| 12,431 | The Complexity of Reasoning about Pattern-based XML Schemas | 2007 | PODS | 4.1945683e-05 |
| 1,929 | XPath Satisfiability in the Presence of DTDs | 2005 | PODS | 0.00010058897 |
| 12,215 | Certain Answers for XML Queries | 2010 | PODS | 4.1945683e-05 |
| 4,625 | On Testing Satisfiability of Tree Pattern Queries | 2004 | VLDB | 6.0406081e-05 |
| 12,296 | Satisfiability of Downward XPath with Data Equality Tests | 2009 | PODS | 4.1945683e-05 |
| 8,200 | On XPath with Transitive Axes and Data Tests | 2013 | PODS | 4.5602267e-05 |