492 search results - page 24 / 99 » Computing aggregations in database query languages |
SEBD
1997
14 years 8 days ago
1997
Abstract. Multidimensional databases are large collections of data, often historical, used for sophisticated analysis oriented to decision making. This activity is supported by an ...
ICDT
2009
ACM
14 years 11 months ago
2009
ACM
The class of unions of conjunctive queries (UCQ) has been shown to be particularly well-behaved for data exchange; its certain answers can be computed in polynomial time (in terms...
TIME
2006
IEEE
14 years 5 months ago
2006
IEEE
Published in: Proceedings of the 13th International Symposium on Temporal Representation and Reasoning (TIME-06), Budapest, Hungary, June 2006. IEEE Computer Society Press. Real-w...
SIGMOD
2003
ACM
14 years 11 months ago
2003
ACM
Modern database systems provide not only powerful data models but also complex query languages supporting powerful features such as the ability to create new database objects and ...
VLDB
1998
ACM
14 years 3 months ago
1998
ACM
We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogen...