2223 search results - page 178 / 445 » Query Optimization in an OODBMS |
224
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SIGMOD
2009
ACM
16 years 4 months ago
2009
ACM
We present a complete XPath cost-based optimization and execution framework and demonstrate its effectiveness and efficiency for a variety of queries and datasets. The framework i...
140
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EDBT
2004
ACM
16 years 4 months ago
2004
ACM
The join operation, which combines tuples from multiple relations, is the most fundamental and, typically, the most expensive operation in database queries. The standard approach t...
147
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EDBT
2009
ACM
15 years 11 months ago
2009
ACM
There has been an explosion of hyperlinked data in many domains, e.g., the biological Web. Expressive query languages and effective ranking techniques are required to convert this...
161
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VLDB
2005
ACM
15 years 9 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...
216
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ICDE
2007
IEEE
16 years 5 months ago
2007
IEEE
To retrieve similar database videos to a query clip, each video is typically represented by a sequence of highdimensional feature vectors. Given a query video containing m feature...