34 search results - page 3 / 7 » Optimization of Nested SQL Queries by Tableau Equivalence |
SIGMOD
2003
ACM
15 years 9 months ago
2003
ACM
The W3C XQuery language recommendation, based on a hierarchical and ordered document model, supports a wide variety of constructs and use cases. There is a diversity of approaches...
DBPL
1995
Springer
15 years 1 months ago
1995
Springer
We study the problem of maintaining recursively-de ned views, such as the transitive closure of a relation, in traditional relational languages that do not have recursion mechanis...
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ICDE
2006
IEEE
15 years 10 months ago
2006
IEEE
The XPath language incorporates powerful primitives for formulating queries containing nested subexpressions which are existentially or universally quantified. However, even the b...
CIKM
2008
Springer
14 years 11 months ago
2008
Springer
We present in this paper an approach for XQuery optimization that exploits minimization opportunities raised in composition-style nesting of queries. More precisely, we consider t...
IS
2002
14 years 9 months ago
2002
In this paper, we explore the possibility of transforming queries with minimum and maximum predicates into equivalent queries that can be computed more efficiently. The main contr...