716 search results - page 60 / 144 » Optimizing Queries in Extended Relational Databases |
LPNMR
2005
Springer
15 years 4 months ago
2005
Springer
We introduce a declarative approach for a coherent composition of autonomous databases. For this we use ID-logic, a formalism that extends classical logic with inductive definitio...
101
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VLDB
1993
ACM
15 years 3 months ago
1993
ACM
Object-oriented databases are a recent and important development and many studies of them have been performed. These consider aspects such as data modeling, query languages, perfo...
113
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DBPL
2001
Springer
15 years 3 months ago
2001
Springer
Abstract. We are interested in the theoretical foundations of the optimization of conjunctive regular path queries (CRPQs). The basic problem here is deciding query containment bot...
VLDB
1994
ACM
15 years 3 months ago
1994
ACM
A join index hierarchy method is proposed to handle the "goto's on disk" problem in objectoriented query processing. The method constructs a hierarchy of join indic...
VLDB
1998
ACM
15 years 3 months ago
1998
ACM
Users often can not easily express their queries. For example, in a multimedia image by content setting, the user might want photographs with sunsets; in current systems, like QBI...