873 search results - page 7 / 175 » Updates and View Maintenance |
DEXA
1998
Springer
13 years 11 months ago
1998
Springer
Abstract. To achieve acceptable query response times in data warehouse environments, the data have to be pre-aggregated according to the need of the applications and stored redunda...
ICDT
2007
ACM
14 years 1 months ago
2007
ACM
Abstract. A common approach to XML updates is to extend XQuery with update operations. This approach results in very expressive languages which are convenient for users but are dif...
ICDE
2001
IEEE
14 years 8 months ago
2001
IEEE
We consider the problems of computing aggregation queries in temporal databases, and of maintaining materialized temporal aggregate views efficiently. The latter problem is partic...
DEXAW
2006
IEEE
13 years 11 months ago
2006
IEEE
When a database is defined as views over autonomous sources, inconsistencies with respect to global integrity constraints are to be expected. This paper investigates the possibili...
COOPIS
2004
IEEE
13 years 11 months ago
2004
IEEE
The model of overloading views is a facility allowing the programmer to separate some kinds of crosscutting concerns that occur during design, implementation and maintenance of dat...