964 search results - page 29 / 193 » Efficiently Ordering Query Plans for Data Integration |
126
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BDA
2004
15 years 5 months ago
2004
We present the path sequence storage model, a new logical model for storing XML documents. This model partitions XML data and content according to the document paths; and uses orde...
218
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VLDB
2007
ACM
16 years 4 months ago
2007
ACM
Given a set of multidimensional data points, skyline query retrieves a set of data points that are not dominated by any other points. This query is useful for multi-preference ana...
139
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PVLDB
2008
15 years 3 months ago
2008
Unlike traditional database queries, keyword queries do not adhere to predefined syntax and are often dirty with irrelevant words from natural languages. This makes accurate and e...
130
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DEBS
2007
ACM
15 years 8 months ago
2007
ACM
Queries for composite events typically involve the four complementary dimensions of event data, event composition, relationships between events (esp. temporal and causal), and acc...
230
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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...