1992 search results - page 197 / 399 » Implementing sorting in database systems |
SIGMOD
2001
ACM
14 years 10 months ago
2001
ACM
The ability to approximately answer aggregation queries accurately and efficiently is of great benefit for decision support and data mining tools. In contrast to previous sampling...
DASFAA
2008
IEEE
14 years 5 months ago
2008
IEEE
The importance of topological relationships between spatial objects is recognized in many disciplines. In the field of spatial databases, topological relationships have played an ...
CAISE
2004
Springer
14 years 4 months ago
2004
Springer
Many information systems store their objects in a relational database. If the object schema or the relational schema of an application can change often or in an independent way, it...
SIGMOD
1997
ACM
14 years 2 months ago
1997
ACM
Data warehouses store materialized views over base data from external sources. Clients typically perform complex read-only queries on the views. The views are refreshed periodical...
DEXA
1997
Springer
14 years 2 months ago
1997
Springer
Abstract. In this paper, a new approach for retrieval from semistructured photographic collections is described. We have developed a retrieval model based on the Dempster-Shafer th...