239 search results - page 5 / 48 » Performance of Querying Temporal Attributes in Object-Relati... |
TIME
1997
IEEE
13 years 12 months ago
1997
IEEE
Temporal databases provide built-in supports for efficient recording and querying of time-evolving data. In this paper, data clustering issues in temporal database environment are...
VLDB
2005
ACM
14 years 7 months ago
2005
ACM
Estimating the selectivity of multidimensional range queries over real valued attributes has significant applications in data exploration and database query optimization. In this p...
VLDB
2003
ACM
14 years 7 months ago
2003
ACM
The efficient retrieval of data items on set-valued attributes is an important research topic that has attracted little attention so far. We studied and modified four index structu...
IDEAS
2005
IEEE
14 years 1 months ago
2005
IEEE
We introduce and study a new class of queries that we refer to as ACMA (arithmetic constraints on multiple attributes) queries. Such combinatorial queries require the simultaneous...
SSD
2001
Springer
14 years 2 days ago
2001
Springer
In dynamic spatio-temporal environments where objects may continuously move in space, maintaining consistent information about the location of objects and processing motion-speciï¬...