654 search results - page 31 / 131 » Complexity of Answering Queries Using Materialized Views |
151
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SAC
2008
ACM
15 years 4 months ago
2008
ACM
We address aggregate queries over GIS data and moving object data, where non-spatial information is stored in a data warehouse. We propose a formal data model and query language t...
144
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AMW
2009
15 years 6 months ago
2009
Abstract. A Data Warehouse (DW) is a data repository that organizes and physically integrates data from multiple sources under special kinds of schemas. A DW is composed by a set o...
150
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DAWAK
2005
Springer
15 years 10 months ago
2005
Springer
In heterogeneous data warehousing environments, autonomous data sources are integrated into a materialized integrated database. The schemas of the data sources and the integrated ...
145
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WWW
2004
ACM
16 years 5 months ago
2004
ACM
We present enhancements for UDDI / DAML-S registries allowing cooperative discovery and selection of Web services with a focus on personalization. To find the most useful service ...
203
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EDBT
2008
ACM
16 years 5 months ago
2008
ACM
Data exchange is the problem of transforming data structured under a schema (called source) into data structured under a different schema (called target). The emphasis of data exc...