829 search results - page 109 / 166 » Location-aware Query Processing and Optimization |
123
Voted
VLDB
2004
ACM
15 years 7 months ago
2004
ACM
The use of inaccurate or outdated database statistics by the query optimizer in a relational DBMS often results in a poor choice of query execution plans and hence unacceptably lo...
116
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DMSN
2005
ACM
15 years 4 months ago
2005
ACM
In this paper, we introduce a rotating interrogation technique for sensor networks called Whirlpool. Whirlpool provides opportunities to optimize data delivery in time-critical mo...
235
Voted
ICDE
2005
IEEE
16 years 3 months ago
2005
IEEE
Data warehousing and on-line analytical processing (OLAP) are essential for decision support applications. Common OLAP operations include for example drill down, roll up, pivot an...
224
Voted
ICDE
1998
IEEE
16 years 3 months ago
1998
IEEE
The association of timestamps with various data items such as tuples or attribute values is fundamental to the management of time-varying information. Using intervals in timestamp...
190
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SIGMOD
2006
ACM
16 years 2 months ago
2006
ACM
Consider an XML view defined over a relational database, and a user query specified over this view. This user XML query is typically processed using the following steps: (a) our t...