750 search results - page 92 / 150 » Aggregates in Possibilistic Databases |
SIGMOD
1995
ACM
14 years 1 months ago
1995
ACM
We study the problem of e cient maintenance of materialized views that may contain duplicates. This problem is particularly important when queries against such views involve aggre...
VLDB
2007
ACM
14 years 10 months ago
2007
ACM
The growing nature of databases, and the flexibility inherent in the SQL query language that allows arbitrarily complex formulations, can result in queries that take inordinate am...
EDBT
2009
ACM
14 years 4 months ago
2009
ACM
Privacy models such as k-anonymity and -diversity typically offer an aggregate or scalar notion of the privacy property that holds collectively on the entire anonymized data set....
ESWS
2009
Springer
14 years 4 months ago
2009
Springer
We present GiaBATA, a system for storing, aggregating, and querying Semantic Web data, based on declarative logic programming technology, namely on the dlvhex system, which allows ...
WEBDB
2007
Springer
14 years 4 months ago
2007
Springer
The Internet has changed the way people look for information. Users now expect the answers to their questions to be available through a simple web search. Web search engines are i...