CCS with Replication in the Chomsky Hierarchy: The Expressive Power of Divergence.

Jesús Aranda Cinzia Di Giusto Mogens Nielsen Frank D. Valencia

Published in: APLAS (2007)

Keyphrases

expressive power
query language
first order logic
data complexity
computational properties
transitive closure
relational algebra
normal form
relational calculus
constraint query languages
databases