572 search results - page 21 / 115 » SQLST: A Spatio-Temporal Data Model and Query Language |
DEXAW
2007
IEEE
15 years 4 months ago
2007
IEEE
The semantic web represents meta-data as a relation of triples using the RDF data model. We have developed a virtual repository system that enables to process queries to RDF views...
VLDB
1991
ACM
15 years 1 months ago
1991
ACM
We explore the implications of supporting bags (i.e. multisets) in a data model and associated query language, and present some formal results concerned with the algebraic propert...
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ICDE
1998
IEEE
15 years 11 months ago
1998
IEEE
Algebraic transformation and optimization techniques have been the method of choice in relational query execution, but applying them in OODBMS is difficult due to the complexity o...
DKE
2007
14 years 9 months ago
2007
In our days knowledge extraction methods are able to produce artifacts (also called patterns) that concisely represent data. Patterns are usually quite heterogeneous and require a...
TKDE
1998
14 years 9 months ago
1998
—This paper describes a unified data model that represents multimedia, timeline, and simulation data utilizing a single set of related data modeling constructs. A uniform model f...