620 search results - page 22 / 124 » Algorithms for Rewriting Aggregate Queries Using Views |
206
Voted
VLDB
2007
ACM
16 years 2 months ago
2007
ACM
Many aspects of the data integration problem have been considered in the literature: how to match schemas across different data sources, how to decide when different records refer...
112
Voted
SIGMOD
1999
ACM
15 years 7 months ago
1999
ACM
Pre-computation and materialization of views with aggregate functions is a common technique in Data Warehouses. Due to the complex structure of the warehouse and the different pro...
147
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DEBS
2009
ACM
15 years 9 months ago
2009
ACM
The nature of data in enterprises and on the Internet is changing. Data used to be stored in a database first and queried later. Today timely processing of new data, represented ...
181
Voted
PDIS
1996
IEEE
15 years 6 months ago
1996
IEEE
Users today are struggling to integrate a broad range of information sources providing di erent levels of query capabilities. Currently, data sources with di erent and limitedcapa...
132
Voted
VLDB
2011
ACM
14 years 9 months ago
2011
ACM
Schema mappings are high-level specifications that describe the relationship between two database schemas. They are an important tool in several areas of database research, notab...