26 search results - page 5 / 6 » Redundancy Awareness in SQL Queries |
DASFAA
2007
IEEE
13 years 8 months ago
2007
IEEE
Cache groups are a powerful concept for database caching, which is used to relieve the backend database load and to keep referenced data close to the application programs at the &q...
SIGMOD
2008
ACM
14 years 5 months ago
2008
ACM
Today's query processing engines do not take advantage of the multiple occurrences of a relation in a query to improve performance. Instead, each instance is treated as a dis...
CCS
2007
ACM
13 years 11 months ago
2007
ACM
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
ICDE
2011
IEEE
12 years 8 months ago
2011
IEEE
— Real-world databases often have extremely complex schemas. With thousands of entity types and relationships, each with a hundred or so attributes, it is extremely difficult fo...
DEXA
2009
Springer
13 years 11 months ago
2009
Springer
Abstract. This paper proposes a natural extension of conditional functional dependencies (cfds [14]) and conditional inclusion dependencies (cinds [8]), denoted by cfdp s and cindp...