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Expressive Power of Non-Deterministic Operators for Logic-based Languages.
Luca Corciulo
Fosca Giannotti
Dino Pedreschi
Carlo Zaniolo
Published in:
Workshop on Deductive Databases and Logic Programming (1994)
Keyphrases
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expressive power
aggregate functions
query language
first order logic
relational algebra
data complexity
computational properties
transitive closure
knowledge representation
database query languages
database
pattern matching
recursive queries