995 search results - page 58 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
136
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VLDB
2005
ACM
15 years 7 months ago
2005
ACM
Developing cost models for query optimization is significantly harder for XML queries than for traditional relational queries. The reason is that XML query operators are much mor...
230
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ICDE
2003
IEEE
16 years 3 months ago
2003
IEEE
XKeyword provides efficient keyword proximity queries on large XML graph databases. A query is simply a list of keywords and does not require any schema or query language knowledg...
133
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ADC
2008
Springer
15 years 8 months ago
2008
Springer
As the eXtensible Markup Language (XML) is about to emerge as a new standard for databases, the problem of providing solid logical grounds for XML query languages arises. For the ...
223
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ICDE
2005
IEEE
16 years 3 months ago
2005
IEEE
We present the first complete translation of XPath into an algebra, paving the way for a comprehensive, state-of-theart XPath (and later on, XQuery) compiler based on algebraic op...
137
Voted
DPD
2002
15 years 1 months ago
2002
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 sites...