1248 search results - page 139 / 250 » Querying and Updating the File |
DOLAP
2010
ACM
13 years 8 months ago
2010
ACM
Relational database systems have been the dominating technology to manage and analyze large data warehouses. Moreover, the ER model, the standard in database design, has a close r...
ICDE
2007
IEEE
14 years 11 months ago
2007
IEEE
Estimating the selectivity of queries is a crucial problem in database systems. Virtually all database systems rely on the use of selectivity estimates to choose amongst the many ...
VLDB
2007
ACM
14 years 10 months ago
2007
ACM
Given a set of multidimensional data points, skyline query retrieves a set of data points that are not dominated by any other points. This query is useful for multi-preference ana...
XSYM
2004
Springer
14 years 3 months ago
2004
Springer
XML indices are essential for efficiently processing XML queries which typically have predicates on both structures and values. Since the number of all possible structural and val...
ICDT
1995
ACM
14 years 1 months ago
1995
ACM
A tuple t1 of relation R subsumes tuple t2 of R, with respect to a query Q if for every database, tuple t1 derives all, and possibly more, answers to query Q than derived by tuple ...