Conditional XPath, the first order complete XPath dialect*

Summary: Introduce Conditional XPath: Core XPath extended with conditional axis relations to express conditional paths (e.g., "do child step while test holds"). Prove on ordered trees it is first-order complete—equally expressive as FO—via since/until-style temporal operators. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID: 1303
Venue: PODS
Year: 2004
Pagerank: 5.4119882e-05
Overall Rank: 8,550 | 41.34%
DOI: 10.1145/1055558.1055562

Incoming Non-self Citations Over Time

Authors

1. Maarten Marx (University of Amsterdam)

BibTeX Citation

@inproceedings{marx_pods04,
        address = {New York, NY, USA},
        series = {{PODS} '04},
        title = {{Conditional XPath, the first order complete XPath dialect*}},
        url = {https://dl.acm.org/doi/10.1145/1055558.1055562},
        doi = {10.1145/1055558.1055562},
        booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
        publisher = {Association for Computing Machinery},
        author = {Marx, Maarten},
        year = {2004}
}

Incoming Citations (Sorted by Pagerank)

Showing 1 of 1 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
12,684	Structural Characterizations of the Semantics of XPath as Navigation Tool on a Document	2006	PODS	5.093636e-05

Outgoing Citations (Sorted by Pagerank)

Showing 6 of 6 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank
395	Containment and Equivalence for an XPath Fragment [Extended Abstract]	2002	PODS	0.00019298983
666	Efficient Algorithms for Processing XPath Queries	2002	VLDB	0.00015166582
763	On the Complexity of Bounded-Variable Queries	1995	PODS	0.00014230134
2,132	The Complexity of XPath Query Evaluation	2003	PODS	9.119436e-05
2,625	Efficient Processing of Expressive Node-Selecting Queries on XML Data in Secondary Storage: A Tree Automata-based Approach	2003	VLDB	8.3300135e-05
2,969	Expressive and efficient pattern languages for tree-structured data (extended abstract)	2000	PODS	7.9147299e-05

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9	6,442	XPath, Transitive Closure Logic, and Nested Tree Walking Automata	2008	PODS
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