17 search results - page 4 / 4 » Approximate schemas, source-consistency and query answering |
SIGMOD
2004
ACM
14 years 5 months ago
2004
ACM
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...
DOLAP
2003
ACM
13 years 10 months ago
2003
ACM
Data warehouse and Online Analytical Processing(OLAP) play a key role in business intelligent systems. With the increasing amount of spatial data stored in business database, how ...