Repetitions and permutations of columns in the semijoin algebra.

Dirk Leinders Jan Van den Bussche

Published in: RAIRO Theor. Informatics Appl. (2009)

Keyphrases

relational algebra
algebraic expressions
data model
database query processing
join operator

boolean algebra
relation algebra
data structure
query language
set theory

distributive lattices
algebraic structures
algebraic structure
databases

query optimization
probability distribution
case study
artificial intelligence