44 search results - page 4 / 9 » Reasoning over Conceptual Schemas and Queries in Temporal Da... |
107
Voted
GEOS
2007
Springer
15 years 6 months ago
2007
Springer
Abstract. A Wide-Area Sensor Network (WASN) is a collection of heterogeneous sensor networks and data repositories spread over a wide geographic area. The diversity of sensor types...
121
click to vote
DLOG
2008
15 years 2 months ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
105
click to vote
OTM
2005
Springer
15 years 5 months ago
2005
Springer
We propose to enhance a schema integration process with a validation phase employing logic-based data models. In our methodology, we validate the source schemas against the data mo...
185
Voted
SIGMOD
2006
ACM
16 years 14 days ago
2006
ACM
Integration systems typically support only a restricted set of queries over the schema they export. The reason is that the participating information sources contribute limited con...
107
click to vote
PSSS
2003
15 years 1 months ago
2003
Abstract: We present DLDB, a knowledge base system that extends a relational database management system with additional capabilities for DAML+OIL inference. We discuss a number of ...