2889 search results - page 222 / 578 » Querying Structured Hyperdocuments |
140
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ICDT
1999
ACM
15 years 9 months ago
1999
ACM
Abstract. In this paper we present a new approach for studying aggregations in the context of database query languages. Starting from a broad de nition of aggregate function, we ad...
131
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DASFAA
2004
IEEE
15 years 8 months ago
2004
IEEE
Abstract. How to query XML documents to extract and restructure the information is an important issue in XML research. Currently, XQuery based on XPath is the most promising standa...
178
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EDBT
1992
ACM
15 years 8 months ago
1992
ACM
The DBGraph storage model, designed for main memory DBMS, ensures both data storage compactness and efficient processing for all database operations. By representing the entire da...
148
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ADC
2008
Springer
15 years 6 months ago
2008
Springer
In order to find all occurrences of a tree/twig pattern in an XML database, a number of holistic twig join algorithms have been proposed. However, most of these algorithms focus o...
160
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ADC
2008
Springer
15 years 6 months ago
2008
Springer
Many existing access controls use node filtering or querying rewriting techniques. These techniques require rather time-consuming processes such as parsing, labeling, pruning and/...