995 search results - page 2 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
BTW
1993
Springer
13 years 8 months ago
1993
Springer
It is clearly crucial for the success of object-oriented databases to find effiĆ cient implementations that improve on the performance of relational sysĆ tems, rather than being...
ICDE
1995
IEEE
14 years 5 months ago
1995
IEEE
?In a fuzzy relational database where a relation is a fuzzy set of tuples and ill-known data are represented by possibility distributions, nested fuzzy queries can be expressed in ...
ICDE
2007
IEEE
14 years 5 months ago
2007
IEEE
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
PODS
2009
ACM
14 years 4 months ago
2009
ACM
We consider the problem of deciding query equivalence for a conjunctive language in which queries output complex objects composed from a mixture of nested, unordered collection ty...
ICDE
2006
IEEE
14 years 5 months ago
2006
IEEE
The XPath language incorporates powerful primitives for formulating queries containing nested subexpressions which are existentially or universally quantified. However, even the b...