617 search results - page 105 / 124 » Semantic queries in databases: problems and challenges |
SIGMOD
1998
ACM
14 years 1 months ago
1998
ACM
Semistructured data is characterized by the lack of any fixed and rigid schema, although typically the data hassomeimplicitstructure. While thelack offixedschemamakesextracting ...
SIGMOD
2004
ACM
14 years 9 months ago
2004
ACM
Schema matching identifies elements of two given schemas that correspond to each other. Although there are many algorithms for schema matching, little has been written about build...
ER
2007
Springer
14 years 2 months ago
2007
Springer
This paper explores the opportunities and challenges for Conceptual Modeling in the domain of Virtual Reality (VR). VR applications are becoming more feasible due to better and fa...
WWW
2008
ACM
14 years 9 months ago
2008
ACM
Because of the high volume and unpredictable arrival rate, stream processing systems may not always be able to keep up with the input data streams-- resulting in buffer overflow a...
PODS
2010
ACM
14 years 1 months ago
2010
ACM
A fundamental problem in data management is to draw a sample of a large data set, for approximate query answering, selectivity estimation, and query planning. With large, streamin...