525 search results - page 44 / 105 » On Query Algebras for Probabilistic Databases |
101
Voted
EDBT
2008
ACM
16 years 3 months ago
2008
ACM
Index trees created using distance based indexing are difficult to maintain online since the distance function involved is often costly to compute. This problem is intensified whe...
227
Voted
ICDE
2005
IEEE
16 years 5 months ago
2005
IEEE
We demonstrate a web service and client application for querying and visualizing datasets defined over arbitrary topological grids. Such gridded datasets are produced by Earth sci...
124
Voted
WEBDB
2005
Springer
15 years 9 months ago
2005
Springer
In the relational model it has been shown that the flat relational algebra has the same expressive power as the nested relational algebra, as far as queries over flat relations ...
138
Voted
CDB
2004
Springer
15 years 9 months ago
2004
Springer
Preference queries are relational algebra or SQL queries that contain occurrences of the winnow operator (find the most preferred tuples in a given relation). We present here a nu...
108
Voted
ER
2003
Springer
15 years 8 months ago
2003
Springer
In this paper we present a volume data model amenable to querying volumes in databases. Unlike most existing volume models, which are directed towards specific applications (notab...