Comparing top k lists
Ronald Fagin, Ravi Kumar, et al.
SODA 1998
A new type of dependency, which includes the well-known functional dependencies as a special case, is defined for relational databases. By using this concept, a new (“fourth”) normal form for relation schemata is defined. This fourth normal form is strictly stronger than Codd's “improved third normal form” (or “Boyce-Codd normal form”). It is shown that every relation schema can be decomposed into a family of relation schemata in fourth normal form without loss of information (that is, the original relation can be obtained from the new relations by taking joins). © 1977, ACM. All rights reserved. © 1977, ACM. All rights reserved.
Ronald Fagin, Ravi Kumar, et al.
SODA 1998
Marcelo Arenas, Ronald Fagin, et al.
ICDT 2010
Y. Sagiv, C. Delobel, et al.
Journal of the ACM
Ronald Fagin, Phokion G. Kolaitis, et al.
SEBD 2024