10 search results - page 2 / 2 » On the Logical Implication of Multivalued Dependencies with ... |
TCS
1998
13 years 5 months ago
1998
Incomplete relations are relations which contain null values, whose meaning is \value is at present unknown". Such relations give rise to two types of functional dependency (...
ICDT
2012
ACM
11 years 8 months ago
2012
ACM
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...
RSCTC
1993
Springer
13 years 10 months ago
1993
Springer
: While the common kinds of uncertainties in databases (e.g., null values, disjunction, corrupt/missing data, domain mismatch, etc.) have been extensively studied, a relatively une...
POPL
1997
ACM
13 years 10 months ago
1997
ACM
Languages like ML and Haskell encourage the view of values as first-class entities that can be passed as arguments or results of functions, or stored as components of data struct...
IOR
2006
13 years 6 months ago
2006
Mixed-Integer Programs (MIP's) involving logical implications modelled through big-M coefficients, are notoriously among the hardest to solve. In this paper we propose and an...