TY - JOUR
T1 - HAS, a relational algebra operator or divide is not enough to conquer
AU - Carlis, John V.
N1 - Publisher Copyright:
© 1986 IEEE.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1986
Y1 - 1986
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0022582810&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0022582810&partnerID=8YFLogxK
U2 - 10.1109/ICDE.1986.7266229
DO - 10.1109/ICDE.1986.7266229
M3 - Conference article
AN - SCOPUS:0022582810
SN - 1084-4627
VL - 2015-January
SP - 254
EP - 261
JO - Proceedings - International Conference on Data Engineering
JF - Proceedings - International Conference on Data Engineering
M1 - 7266229
T2 - 2nd IEEE International Conference on Data Engineering, COMPDEC 1986
Y2 - 5 February 1986 through 7 February 1986
ER -