394 search results - page 8 / 79 » Conditional Preferences: A New Semantics for Database Querie... |
PODS
2006
ACM
14 years 7 months ago
2006
ACM
The query equivalence problem has been studied extensively for set-semantics and, more recently, for bag-set semantics. However, SQL queries often combine set and bag-set semantic...
AUSDM
2007
Springer
14 years 1 months ago
2007
Springer
Recommender systems are important to help users select relevant and personalised information over massive amounts of data available. We propose an unified framework called Prefer...
SIGMOD
2011
ACM
12 years 10 months ago
2011
ACM
The emergence of Web 2.0 has resulted in a huge amount of heterogeneous data that are contributed by a large number of users, engendering new challenges for data management and qu...
COOPIS
2003
IEEE
14 years 23 days ago
2003
IEEE
The use of semantic knowledge in its various forms has become an important aspect in managing data in database and information systems. In the form of integrity constraints, it ha...
PODS
2004
ACM
14 years 7 months ago
2004
ACM
The Semantic Web is based on the idea of adding more machine-readable semantics to web information via annotations written in a language called the Resource Description Framework ...