1778 search results - page 170 / 356 » The Theory of Probabilistic Databases |
255
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PODS
2009
ACM
16 years 6 months ago
2009
ACM
The paper investigates the question of whether a partially closed database has complete information to answer a query. In practice an enterprise often maintains master data Dm, a ...
173
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PODS
2004
ACM
16 years 6 months ago
2004
ACM
Unions of conjunctive queries, also known as select-project-join-union queries, are the most frequently asked queries in relational database systems. These queries are definable b...
253
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PODS
2010
ACM
15 years 11 months ago
2010
ACM
Cardinality estimation is the problem of estimating the number of tuples returned by a query; it is a fundamentally important task in data management, used in query optimization, ...
160
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PODS
2007
ACM
16 years 6 months ago
2007
ACM
Variables are the distinguishing new feature of XPath 2.0 which permits to select n-tuples of nodes in trees. It is known that the Core of XPath 2.0 captures n-ary first-order (FO...
131
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ICDE
2008
IEEE
16 years 24 days ago
2008
IEEE
— Privacy, lineage, uncertainty, and security are important to many information integration efforts, and these “PLUS” properties interact in a number of complex ways. This pa...