Login / Signup
Comparing the expressiveness of downward fragments of the relation algebra with transitive closure on trees.
Jelle Hellings
Marc Gyssens
Yuqing Wu
Dirk Van Gucht
Jan Van den Bussche
Stijn Vansummeren
George H. L. Fletcher
Published in:
Inf. Syst. (2020)
Keyphrases
</>
transitive closure
expressive power
relation algebra
first order logic
constraint databases
query language
relational algebra
data complexity
recursive queries
labeling scheme
tree structure
query evaluation
database
fuzzy relations
spatial databases
probabilistic model
data mining
databases