716 search results - page 35 / 144 » Optimizing Queries in Extended Relational Databases |
189
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SIGMOD
2006
ACM
15 years 11 months ago
2006
ACM
In this paper, we present the design, implementation, and evaluation of a system that executes complex event queries over real-time streams of RFID readings encoded as events. The...
ICDT
2005
ACM
15 years 4 months ago
2005
ACM
Abstract. A classical problem in query optimization is to find the optimal ordering of a set of possibly correlated selections. We provide an ion of this problem as a generalizati...
ICDE
2010
IEEE
14 years 11 months ago
2010
IEEE
A way to optimize performance of relational row store databases is to reduce the row widths by vertically partitioning tables into table fractions in order to minimize the number ...
SIGMOD
1997
ACM
15 years 3 months ago
1997
ACM
In this paper, we study a simple SQL extension that enables query writers to explicitly limit the cardinality of a query result. We examine its impact on the query optimization an...
197
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ICDE
2003
IEEE
16 years 17 days ago
2003
IEEE
XKeyword provides efficient keyword proximity queries on large XML graph databases. A query is simply a list of keywords and does not require any schema or query language knowledg...