119 search results - page 9 / 24 » javax.XXL: A prototype for a Library of Query processing Alg... |
VLDB
1998
ACM
14 years 1 months ago
1998
ACM
The query execution engine in Microsoft SQL Server employs hash-based algorithms for inner and outer joins, semi-joins, set operations (such as intersection), grouping, and duplic...
SIGIR
2003
ACM
14 years 2 months ago
2003
ACM
In a federated digital library system, it is too expensive to query every accessible library. Resource selection is the task to decide to which libraries a query should be routed....
ADC
2005
Springer
14 years 2 months ago
2005
Springer
Although data stored in XML is of increasing importance, most existing data repositories are still managed by relational database systems. In light of this, recent XML database re...
EDBTW
2004
Springer
14 years 2 months ago
2004
Springer
Many users and applications require the integration of semi-structured data from autonomous, heterogeneous Web sources. Over the last years mediator systems have emerged that use d...
SIGMOD
2007
ACM
14 years 9 months ago
2007
ACM
Good cardinality estimates are critical for generating good execution plans during query optimization. Complex predicates, correlations between columns, and user-defined functions...