617 search results - page 31 / 124 » Semantic queries in databases: problems and challenges |
SIGMOD
2011
ACM
12 years 11 months ago
2011
ACM
Ranking queries report the top-K results according to a user-defined scoring function. A widely used scoring function is the weighted summation of multiple scores. Often times, u...
DEXA
2005
Springer
14 years 2 months ago
2005
Springer
In relational database systems a combination of privileges and views is employed to limit a user’s access and to hide non-public data. The data privacy problem is to decide wheth...
WWW
2004
ACM
14 years 9 months ago
2004
ACM
This paper investigates how the vision of the Semantic Web can be carried over to the realm of email. We introduce a general notion of semantic email, in which an email message co...
ICDE
2006
IEEE
14 years 10 months ago
2006
IEEE
Peer-to-peer databases are becoming prevalent on the Internet for distribution and sharing of documents, applications, and other digital media. The problem of answering large scal...
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
Functional testing of a query language is a challenging task in practice. In order to reveal errors in the query processing functionality, it is necessary to verify the actual res...