Title :
HAS, a relational algebra operator or divide is not enough to conquer
Author_Institution :
Computer Science Department, University of Minnesota
Abstract :
The relational algebra operator division is misnamed, hard to understand and insufficient. This paper explains division and presents HAS, a generalization of division which is useful for answering questions about an M-M relationship between entities.
Keywords :
"Algebra","Compounds","Calculus","Relational databases","Computer science","Database systems"
Conference_Titel :
Data Engineering, 1986 IEEE Second International Conference on
Print_ISBN :
978-0-8186-0655-7
DOI :
10.1109/ICDE.1986.7266229
