78 search results - page 10 / 16 » Progressive Query Optimization for Federated Queries |
110
click to vote
CIKM
2011
Springer
13 years 9 months ago
2011
Springer
A continuous top-k query retrieves the k most preferred objects in a data stream according to a given preference function. These queries are important for a broad spectrum of appl...
ICDE
2009
IEEE
15 years 4 months ago
2009
IEEE
— Existing stream processing systems are optimized for a specific metric, which may limit their applicability to diverse applications and environments. This paper presents XFlow...
170
click to vote
SIGMOD
2005
ACM
15 years 9 months ago
2005
ACM
Clio, the IBM Research system for expressing declarative schema mappings, has progressed in the past few years from a research prototype into a technology that is behind some of I...
PODS
2010
ACM
15 years 2 months ago
2010
ACM
Cardinality estimation is the problem of estimating the number of tuples returned by a query; it is a fundamentally important task in data management, used in query optimization, ...
SIGMOD
1996
ACM
15 years 1 months ago
1996
ACM
METU INteroperable Database System (MIND) is a multidatabase system that aims at achieving interoperability among heterogeneous, federated DBMSs. MIND architecture is based on OMG...