721 search results - page 42 / 145 » Supporting top-k join queries in relational databases |
177
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VLDB
2007
ACM
15 years 10 months ago
2007
ACM
Databases are increasingly being used to store information covered by heterogeneous policies, which require support for access control with great flexibility. This has led to incr...
SIGMOD
1999
ACM
15 years 2 months ago
1999
ACM
A major bottleneck in implementing sampling as a primitive relational operation is the ine ciency ofsampling the output of a query. It is not even known whether it is possible to ...
189
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SIGMOD
2005
ACM
15 years 9 months ago
2005
ACM
XML documents are normally stored as plain text files. Hence, the natural and most convenient way to update XML documents is to simply edit the text files. But efficient query eva...
TKDE
1998
14 years 9 months ago
1998
—When a multidatabase system contains textual database systems (i.e., information retrieval systems), queries against the global schema of the multidatabase system may contain a ...
ICDE
2008
IEEE
15 years 4 months ago
2008
IEEE
— Similarity joins have attracted significant interest, with applications in Geographical Information Systems, astronomy, marketing analyzes, and anomaly detection. However, all...