224 search results - page 45 / 45 » Rewriting XPath Queries Using Materialized Views |
SIGMOD
2007
ACM
14 years 7 months ago
2007
ACM
Sketching techniques can provide approximate answers to aggregate queries either for data-streaming or distributed computation. Small space summaries that have linearity propertie...
DEXA
2004
Springer
14 years 1 months ago
2004
Springer
Data integration is the process that gives users access to multiple data sources though queries against a global schema. Semantic heterogeneity has been identified as the most imp...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
This paper addresses the problem of efficient maintenance of a materialized skyline view in response to skyline removals. While there has been significant progress on skyline quer...
GIS
2007
ACM
13 years 11 months ago
2007
ACM
A frequent query in geospatial planning and decision making domains (e.g., emergency response, data acquisition, street cleaning), is to find an optimal traversal plan (OTP) that ...