279 search results - page 27 / 56 » Towards Adaptive Costing of Database Access Methods |
HOTSWUP
2009
ACM
14 years 1 months ago
2009
ACM
The complexity, cost, and down-time currently created by the database schema evolution process is the source of incessant problems in the life of information systems and a major s...
DAWAK
2009
Springer
14 years 10 days ago
2009
Springer
Skyline queries have gained much attention as alternative query semantics with pros (e.g.low query formulation overhead) and cons (e.g.large control over result size). To overcome ...
SIGMOD
2007
ACM
14 years 8 months ago
2007
ACM
With the increasing amount of text data stored in relational databases, there is a demand for RDBMS to support keyword queries over text data. As a search result is often assemble...
OOPSLA
1992
Springer
14 years 16 days ago
1992
Springer
CACL is a protection scheme for objects that offers a simple and flexible model of protection and has an efficient, software-only implementation. The model, based on Access Contro...
GIS
2006
ACM
14 years 9 months ago
2006
ACM
This paper presents a query optimizer module based on cost estimation that chooses the best filtering step algorithm to perform a specific spatial join operation. A set of express...