84 search results - page 5 / 17 » Event-Oriented Data Models and Temporal Queries in Transacti... |
DBPL
2001
Springer
13 years 11 months ago
2001
Springer
Abstract. We address a fundamental question concerning spatio-temporal database systems: “What are exactly spatio-temporal queries?” We define spatio-temporal queries to be co...
ICDE
2003
IEEE
14 years 8 months ago
2003
IEEE
We present a valid-time extension of SQL and investigate its efficient implementation on an Object-Relational database system. We propose an approach where temporal queries are ex...
ICDE
2008
IEEE
14 years 8 months ago
2008
IEEE
Content-based retrieval of spatio-temporal patterns from human motion databases is inherently nontrivial since finding effective distance measures for such data is difficult. These...
DEXAW
2004
IEEE
13 years 11 months ago
2004
IEEE
Many applications refer to moving objects or phenomena and require spatio-temporal modelling and specific analysis. Unlike conventional data where attributes are simple values (nu...
SEBD
2001
13 years 8 months ago
2001
This paper introduces a new logical formalism, intended for temporal conceptual modelling, as a natural combination of the well-known description logic DLR and point-based linear ...