Axiomatizing the logical core of XPath 2.0

Open Access
Authors
Publication date 2009
Journal Theory of Computing Systems
Volume | Issue number 44 | 4
Pages (from-to) 561-589
Organisations
  • Faculty of Science (FNWI) - Informatics Institute (IVI)
Abstract The first aim of this paper is to present the logical core of XPath 2.0: a logically clean, decidable fragment, which includes most navigational features of XPath 2.0 (complex counting conditions and data joins are not supported, as they lead to undecidability). The second aim is to provide a list of equations completely axiomatizing query equivalence in this language (i.e., all other query equivalences can be derived from these).
Document type Article
Language English
Published at https://doi.org/10.1007/s00224-008-9151-9
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