571 search results - page 32 / 115 » A New Type of Metadata for Querying Data Integration Systems |
VLDB
1992
ACM
13 years 11 months ago
1992
ACM
Research in temporal databases has mainly focused on defining temporal data models by extending existing models, and developing access structures for temporal data. Little has bee...
AMAI
2005
Springer
13 years 7 months ago
2005
Springer
Mediator systems integrate distributed, heterogeneous and autonomous data sources, but their e ective use requires the solution of hard query optimization problems. This is usuall...
HICSS
2005
IEEE
14 years 1 months ago
2005
IEEE
Continuing innovations in information and communication technologies offer powerful tools for building digital government but, at the same time, in many environments they have lea...
PODS
2011
ACM
12 years 10 months ago
2011
ACM
In the traditional data exchange setting, source instances are restricted to be complete in the sense that every fact is either true or false in these instances. Although natural ...
DMSN
2009
ACM
14 years 2 months ago
2009
ACM
Networked, distributed real world sensing is an increasingly prominent topic in computing and has quickly expanded from resource constrained “sensor networks” measuring simple...