62 search results - page 1 / 13 » A Family of Incomplete Relational Database Models |
VLDB
1989
ACM
13 years 9 months ago
1989
ACM
In this paper. we utilize intervals for unknown values in incompleterelational databases.We usetablesto representunknown relations. First, we define three partial tuple types in a...
VLDB
1992
ACM
13 years 9 months ago
1992
ACM
For the conventional relational model there has been considerable research in the area of incomplete information. On the other hand, research in temporal databases has concentrated...
EDBTW
2006
Springer
13 years 8 months ago
2006
Springer
Abstract. We discuss, compare and relate some old and some new models for incomplete and probabilistic databases. We characterize the expressive power of c-tables over infinite dom...
PODS
2007
ACM
14 years 5 months ago
2007
ACM
We show that relational algebra calculations for incomplete databases, probabilistic databases, bag semantics and whyprovenance are particular cases of the same general algorithms...
EDBTW
2006
Springer
13 years 8 months ago
2006
Springer
One of the goals of cleaning an inconsistent database is to remove conflicts between tuples. Typically, the user specifies how the conflicts should be resolved. Sometimes this spec...