486 search results - page 24 / 98 » What was the Query |
137
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DEBU
2002
15 years 5 months ago
2002
An increasing number of business users and software applications need to process information that is accessible via multiple diverse information systems, such as database systems,...
170
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ICDE
2005
IEEE
15 years 11 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...
164
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CIKM
1999
Springer
15 years 9 months ago
1999
Springer
When a query is submitted to a metasearch engine, decisions are made with respect to the underlying search engines to be used, what modifications will be made to the query, and ho...
162
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CIKM
1994
Springer
15 years 9 months ago
1994
Springer
Accessing information sources to retrieve data requested by a user can be expensive, especially when dealing with distributed information sources. One way to reduce this cost is t...
203
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DOCENG
2004
ACM
15 years 10 months ago
2004
ACM
With the wide adoption of XML as a standard data representation and exchange format, querying XML documents becomes increasingly important. However, relational database systems co...