654 search results - page 37 / 131 » Complexity of Answering Queries Using Materialized Views |
DBPL
1997
Springer
14 years 19 days ago
1997
Springer
Previous research on materialized views has primarily been in the context of flat relational databases--materialized views defined in terms of one or more flat relations. This pape...
VLDB
1999
ACM
14 years 22 days ago
1999
ACM
On-Line Analytical Processing (OLAP) based on a dimensional view of data is being used increasingly for the purpose of analyzing very large amounts of data. To improve query perfo...
XSYM
2007
Springer
14 years 2 months ago
2007
Springer
Several web applications (such as processing RSS feeds or web service messages) rely on XPath-based data manipulation tools. Web developers need to use XPath queries effectively o...
VISUALIZATION
2003
IEEE
14 years 1 months ago
2003
IEEE
This paper presents a novel algorithm combining view-dependent rendering and conservative occlusion culling for interactive display of complex environments. A vertex hierarchy of ...
GIS
2004
ACM
14 years 9 months ago
2004
ACM
Sensor networks are unattended deeply distributed systems whose schema can be conceptualized using the relational model. Aggregation queries on the data sampled at each ode are th...