1782 search results - page 226 / 357 » Processing Queries over Distributed XML Databases |
ICDE
2005
IEEE
14 years 2 months ago
2005
IEEE
Current federated systems deploy cost-based query optimization mechanisms; i.e., the optimizer selects a global query plan with the lowest cost to execute. Thus, cost functions in...
VLDB
1999
ACM
14 years 1 months ago
1999
ACM
We describe the architecture of a hypertext resource discovery system using a relational database. Such a system can answer questions that combine page contents, metadata, and hyp...
SRDS
1998
IEEE
14 years 1 months ago
1998
IEEE
A major cost in executing queries in a distributed database system is the data transfer cost incurred in transferring relations (fragments) accessed by a query from different site...
SIGMOD
2001
ACM
14 years 9 months ago
2001
ACM
Estimating the result size of complex queries that involve selection on multiple attributes and the join of several relations is a difficult but fundamental task in database query...
SIGMOD
2008
ACM
14 years 9 months ago
2008
ACM
Today's enterprise databases are large and complex, often relating hundreds of entities. Enabling ordinary users to query such databases and derive value from them has been o...