7607 search results - page 268 / 1522 » Querying data provenance |
151
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IADIS
2003
15 years 8 months ago
2003
Query formulation is an essential part of successful information retrieval. The challenges in formulating effective queries are emphasized in web information search, because the w...
154
Voted
ISCI
2008
15 years 6 months ago
2008
This paper considers the theory of database queries on the complex value data model with external functions. Motivated by concerns regarding query evaluation, we first identify re...
189
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SIGMOD
2002
ACM
15 years 6 months ago
2002
ACM
Traditional query processors generate full, accurate query results, either in batch or in pipelined fashion. We argue that this strict model is too rigid for exploratory queries o...
187
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IJIRR
2011
15 years 1 months ago
2011
— recently, search engines become more critical for finding information over the World Wide Web where web content growing fast, the user's satisfaction of search engine resu...
317
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ICDE
2009
IEEE
16 years 8 months ago
2009
IEEE
We have developed a system to process database queries over composed data providing web services. The queries are transformed into execution plans containing an operator that invok...