79 search results - page 11 / 16 » Answering XML queries using materialized views revisited |
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
Caching data by maintaining materialized views typically requires updating the cache appropriately to reflect dynamic source updates. Extensive research has addressed the problem ...
SACMAT
2005
ACM
14 years 1 months ago
2005
ACM
We investigate a generalization of the notion of XML security view introduced by Stoica and Farkas [17] and later refined by Fan et al. [8]. The model consists of access control ...
DKE
1999
13 years 7 months ago
1999
A Data Warehouse DW is a database that collects and stores data from multiple remote and heterogeneous information sources. When a query is posed, it is evaluated locally, without...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
We study the problem of answering queries through a target schema, given a set of mappings between one or more source schemas and this target schema, and given that the data is at...
SIGMOD
2001
ACM
14 years 7 months ago
2001
ACM
Users often need to optimize the selection of objects by appropriately weighting the importance of multiple object attributes. Such optimization problems appear often in operation...