833 search results - page 3 / 167 » Nested Queries in Object Bases |
SSDBM
2000
IEEE
13 years 10 months ago
2000
IEEE
In implementations of non-standard database systems, large objects are often embedded within an aggregate of different types, i.e. a tuple. For a given size and access probabilit...
IJCAI
1993
13 years 7 months ago
1993
We consider the computational complexity of evaluating nested counterfactuals over a propositional knowledge base. Counterfactual implication models a statement "if p, then q...
COOPIS
1997
IEEE
13 years 10 months ago
1997
IEEE
W e discuss the modification of queries against an integrated view in a federation of object-oriented databases. W epresent a generalisation of existing algorithms for simple glob...
IDEAS
2003
IEEE
13 years 11 months ago
2003
IEEE
In the past few years, much attention has been paid to the study of semistructured data, i.e., data with irregular, possibly unstable, and rapidly changing structure, and, in part...
CIKM
2008
Springer
13 years 7 months ago
2008
Springer
We present in this paper an approach for XQuery optimization that exploits minimization opportunities raised in composition-style nesting of queries. More precisely, we consider t...