1039 search results - page 59 / 208 » Query reformulation with constraints |
140
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SIGMOD
2010
ACM
15 years 6 months ago
2010
ACM
In many business and consumer applications, queries have cardinality constraints. However, current database systems provide minimal support for cardinality assurance. Consequently...
169
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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...
261
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ICDE
2007
IEEE
16 years 7 months ago
2007
IEEE
Skyline query processing has been investigated extensively in recent years, mostly for only one query reference point. An example of a single-source skyline query is to find hotel...
172
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CDB
2004
Springer
15 years 11 months ago
2004
Springer
Preference queries are relational algebra or SQL queries that contain occurrences of the winnow operator (find the most preferred tuples in a given relation). We present here a nu...
163
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AMW
2010
15 years 7 months ago
2010
Abstract. Consistent query answering (CQA) is about formally characterizing and computing semantically correct answers to queries posed to a database that may fail to satisfy certa...