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Expressive Power of Tree and String Based Wrappers.
Daisuke Ikeda
Yasuhiro Yamada
Sachio Hirokawa
Published in:
IIWeb (2003)
Keyphrases
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expressive power
query language
data complexity
first order logic
pattern queries
regular expressions
computational properties
transitive closure
data structure
monadic second order logic
pattern matching
relational algebra
tree automata
tree matching
relational calculus
index structure
b tree