Sciweavers

RTA
2004
Springer

Querying Unranked Trees with Stepwise Tree Automata

14 years 3 months ago
Querying Unranked Trees with Stepwise Tree Automata
The problem of selecting nodes in unranked trees is the most basic querying problem for XML. We propose stepwise tree automata for querying unranked trees. Stepwise tree automata can express the same monadic queries as monadic Datalog and monadic second-order logic. We prove this result by reduction to the ranked case, via a new systematic correspondence that relates unranked and ranked queries.
Julien Carme, Joachim Niehren, Marc Tommasi
Added 02 Jul 2010
Updated 02 Jul 2010
Type Conference
Year 2004
Where RTA
Authors Julien Carme, Joachim Niehren, Marc Tommasi
Comments (0)