712 search results - page 7 / 143 » Decoupled Query Optimization for Federated Database Systems |
SIGMOD
1987
ACM
15 years 28 days ago
1987
ACM
83
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PODS
2001
ACM
15 years 9 months ago
2001
ACM
The need to search for complex and recurring patterns in database sequences is shared by many applications. In this paper, we discuss how to express and support efficiently sophis...
DOLAP
2003
ACM
15 years 2 months ago
2003
ACM
Motivated by the need for more flexible OLAP systems, this paper presents work on logical integration of external data in OLAP databases, carried out in cooperation between the D...
115
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BTW
2005
Springer
15 years 3 months ago
2005
Springer
Abstract: Peer data management systems (PDMS) are the natural extension of integrated information systems. Conventionally, a single integrating system manages an integrated schema,...
119
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IDEAS
2010
IEEE
14 years 8 months ago
2010
IEEE
Even though an effective cost-based query optimizer is of utmost importance for the efficient evaluation of XQuery expressions in native XML database systems, such a component is...