8491 search results - page 1293 / 1699 » Forecasting in Database Systems |
161
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VLDB
1998
ACM
15 years 11 months ago
1998
ACM
To fulfill the requirement of fast interactive multidimensional data analysis, database systems precompute aggregate views on some subsets of dimensions and their corresponding hi...
207
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DBPL
1997
Springer
15 years 11 months ago
1997
Springer
Previous research on materialized views has primarily been in the context of flat relational databases--materialized views defined in terms of one or more flat relations. This pape...
161
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SIGMOD
1996
ACM
15 years 11 months ago
1996
ACM
Magic sets rewriting is a well-known optimization heuristic for complex decision-support queries. There can be many variants of this rewriting even for a single query, which diffe...
179
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SIGMOD
1993
ACM
15 years 11 months ago
1993
ACM
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...
208
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EDBT
2009
ACM
15 years 10 months ago
2009
ACM
In a database system, disclosure of confidential private data may occur if users can put together the answers of past queries. Traditional access control mechanisms cannot guard a...