5130 search results - page 313 / 1026 » Constraint Query Languages |
186
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EDBT
2012
ACM
13 years 9 months ago
2012
ACM
We present an effective optimization framework for general SQLlike map-reduce queries, which is based on a novel query algebra and uses a small number of higher-order physical ope...
181
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DBPL
1995
Springer
15 years 10 months ago
1995
Springer
We study the problem of maintaining recursively-de ned views, such as the transitive closure of a relation, in traditional relational languages that do not have recursion mechanis...
187
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SIGMOD
2002
ACM
16 years 6 months ago
2002
ACM
The emergence of the Web has increased interests in XML data. XML query languages such as XQuery and XPath use label paths to traverse the irregularly structured data. Without a s...
164
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ICDCS
1996
IEEE
15 years 10 months ago
1996
IEEE
Access to large numbers of data sources introduces new problems for users of heterogeneous distributed databases. End users and application programmers must deal with unavailable ...
181
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PPDP
2010
Springer
15 years 5 months ago
2010
Springer
Database query optimizers rely on data statistics in selecting query execution plans. Similar query optimization techniques are desirable for deductive databases and, to make this...