716 search results - page 3 / 144 » Optimizing Queries in Extended Relational Databases |
PSSS
2003
13 years 11 months ago
2003
Abstract: We present DLDB, a knowledge base system that extends a relational database management system with additional capabilities for DAML+OIL inference. We discuss a number of ...
PODS
1998
ACM
14 years 2 months ago
1998
ACM
SIGMOD
2004
ACM
14 years 10 months ago
2004
ACM
Current day database applications, with large numbers of users, require fine-grained access control mechanisms, at the level of individual tuples, not just entire relations/views,...
ICDE
2006
IEEE
14 years 3 months ago
2006
IEEE
Due to the flexible structures of SQL, no general approach works efficiently for all kinds of queries. Some special kinds of queries can be further optimized for better performa...
SIGMOD
2002
ACM
13 years 9 months ago
2002
ACM
A variety of developments combine to highlight the need for respecting order when manipulating relations. For example, new functionality is being added to SQL to support OLAP-styl...