136 search results - page 7 / 28 » Optimization and Dataflow Algorithms for Nested Tree Queries |
111
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NJC
2006
14 years 9 months ago
2006
Regular tree queries (RTQs) are a class of queries considered especially relevant for the expressiveness and evaluation of XML query languages. The algorithms proposed so far for ...
169
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VLDB
2002
ACM
15 years 9 months ago
2002
ACM
: Purpose ? Tree pattern is at the core of XML queries. The tree patterns in XML queries typically contain redundancies, especially when broad integrity constraints (ICs) are prese...
ICDT
2012
ACM
13 years 1 days ago
2012
ACM
We introduce a representation system for relational data based on algebraic factorisation using distributivity of product over union and commutativity of product and union. We giv...
VLDB
1995
ACM
15 years 1 months ago
1995
ACM
We address the problem of finding parallel plans for SQL queries using the two-phase approach of join ordering and query rewrite (JOQR) followed by parallelization. We focus on t...
MOBIDE
2010
ACM
14 years 9 months ago
2010
ACM
We propose a distributed algorithm to construct a balanced communication tree that serves in gathering data from the network nodes to a sink. Our algorithm constructs a near-optim...