716 search results - page 12 / 144 » Optimizing Queries in Extended Relational Databases |
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DOCENG
2004
ACM
15 years 4 months ago
2004
ACM
With the wide adoption of XML as a standard data representation and exchange format, querying XML documents becomes increasingly important. However, relational database systems co...
189
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ICDE
2006
IEEE
16 years 15 days ago
2006
IEEE
Relational division, also known as small divide, is a derived operator of the relational algebra that realizes a many-to-one set containment test, where a set is represented as a ...
CIKM
2010
Springer
14 years 9 months ago
2010
Springer
This paper proposes a ranking method to exploit statistical correlations among pairs of attribute values in relational databases. For a given query, the correlations of the query ...
SIGMOD
2004
ACM
15 years 11 months ago
2004
ACM
Ranking is an important property that needs to be fully supported by current relational query engines. Recently, several rank-join query operators have been proposed based on rank...
DBPL
2007
Springer
15 years 5 months ago
2007
Springer
Annotated relational databases can be queried either by simply making the annotations explicitly available along the ordinary data, or by adapting the standard query operators so ...