4397 search results - page 808 / 880 » Relational Algebra Operations |
SIGMOD
2008
ACM
14 years 10 months ago
2008
ACM
Schema integration is the problem of creating a unified target schema based on a set of existing source schemas that relate to each other via specified correspondences. The unifie...
SIGMOD
2008
ACM
14 years 10 months ago
2008
ACM
The proliferation of network data in various application domains has raised privacy concerns for the individuals involved. Recent studies show that simply removing the identities ...
SIGMOD
2007
ACM
14 years 10 months ago
2007
ACM
Modern storage systems are sophisticated. Simple directattached storage devices are giving way to storage systems that are shared, flexible, virtualized and network-attached. Toda...
SIGMOD
2005
ACM
14 years 10 months ago
2005
ACM
A defining characteristic of continuous queries over on-line data streams, possibly bounded by sliding windows, is the potentially infinite and time-evolving nature of their input...
SIGMOD
2002
ACM
14 years 10 months ago
2002
ACM
This paper addresses the problem of evaluating ranked top-? queries with expensive predicates. As major DBMSs now all support expensive user-defined predicates for Boolean queries...