1529 search results - page 42 / 306 » Querying for meta knowledge |
158
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VLDB
2005
ACM
15 years 11 months ago
2005
ACM
We extend the OLAP data model to represent data ambiguity, specifically imprecision and uncertainty, and introduce an allocation-based approach to the semantics of aggregation qu...
173
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SPIRE
2005
Springer
15 years 11 months ago
2005
Springer
Effective information retrieval in XML documents requires the user to have good knowledge of document structure and of some formal query language. XML query languages like XPath a...
240
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VLDB
2007
ACM
16 years 6 months ago
2007
ACM
Correctly generating a structured query (e.g., an XQuery or a SQL query) requires the user to have a full understanding of the database schema, which can be a daunting task. Alter...
196
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ICDE
2006
IEEE
16 years 9 days ago
2006
IEEE
Continuous spatio-temporal queries have recently received increasing attention due to the abundance of location-aware applications. This paper addresses the Continuous Reverse Nea...
174
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DBISP2P
2003
Springer
15 years 11 months ago
2003
Springer
Databases have employed a schema-based approach to store and retrieve structured data for decades. For peer-to-peer (P2P) networks, similar approaches are just beginning to emerge,...