654 search results - page 49 / 131 » Complexity of Answering Queries Using Materialized Views |
106
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PVLDB
2008
15 years 2 months ago
2008
OLAP servers based on relational backends typically exploit materialized aggregate tables to improve response times of complex analytical queries. One of the key problems in this ...
146
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HPDC
2010
IEEE
15 years 4 months ago
2010
IEEE
Data is routinely created, disseminated, and processed in distributed systems that span multiple administrative domains. To maintain accountability while the data is transformed b...
117
Voted
SIGMOD
1995
ACM
15 years 6 months ago
1995
ACM
When querying a temporal database, a user often makes certain semantic assumptions on stored temporal data. This paper formalizes and studies two types of semantic assumptions: po...
196
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SIGMOD
2006
ACM
16 years 3 months ago
2006
ACM
Real-world data -- especially when generated by distributed measurement infrastructures such as sensor networks -- tends to be incomplete, imprecise, and erroneous, making it impo...
142
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CIKM
1994
Springer
15 years 7 months ago
1994
Springer
Accessing information sources to retrieve data requested by a user can be expensive, especially when dealing with distributed information sources. One way to reduce this cost is t...