305 search results - page 19 / 61 » Including Group-By in Query Optimization |
BNCOD
2004
13 years 9 months ago
2004
Extending relational database functionality to include data mining primitives is one step towards the greater goal of more closely integrated database and mining systems. This pape...
SAC
1997
ACM
13 years 12 months ago
1997
ACM
Infomaster is an information integration system. It provides integrated access to distributed, heterogeneous information sources, thus giving its users the illusion of a centraliz...
ICDE
2001
IEEE
14 years 9 months ago
2001
IEEE
LeSelect is a mediator system which allows scientists to publish their resources (data and programs) so they can be transparently accessed. The scientists can typically issue quer...
SSDBM
2002
IEEE
14 years 17 days ago
2002
IEEE
This paper presents an approach to answering queries over an ontology modelled using a description logic. The ontology acts as a global schema, providing a declarative description...
SSDBM
2002
IEEE
14 years 17 days ago
2002
IEEE
The efficient management of interval data represents a core requirement for many temporal and spatial database applications. With the Relational Interval Tree (RI-tree1 ), an effi...