774 search results - page 131 / 155 » Information Integration Using Logical Views |
LEGE
2003
13 years 9 months ago
2003
ELeGI, the European Learning Grid Infrastructure, has the ambitious goal of fostering effective learning and knowledge construction through the dynamic provision of service-based ...
DOLAP
2005
ACM
13 years 9 months ago
2005
ACM
Different modeling approaches have been proposed to overcome every design pitfall of the development of the different parts of a data warehouse (DW) system. However, they are all ...
HPDC
2010
IEEE
13 years 8 months ago
2010
IEEE
Data is routinely created, disseminated, and processed in distributed systems that span multiple administrative domains. To maintain accountability while the data is transformed b...
SOFTWARE
2002
13 years 7 months ago
2002
is the level of abstraction: a logical model ignores the constraints that the underlying database technology imposes and presents a simplified view. Sometimes physical database des...
ICDT
2012
ACM
11 years 10 months ago
2012
ACM
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...