221 search results - page 3 / 45 » Chase of Recursive Queries |
PODS
2012
ACM
11 years 10 months ago
2012
ACM
Over the past several decades, the study of conjunctive queries has occupied a central place in the theory and practice of database systems. In recent years, conjunctive queries h...
SEMWEB
2005
Springer
14 years 28 days ago
2005
Springer
Semantic query optimization (SQO) has been proved to be quite useful in various applications (e.g., data integration, graphical query generators, caching, etc.) and has been extens...
VLDB
1999
ACM
13 years 11 months ago
1999
ACM
We present an optimization method and algorithm designed for three objectives: physical data independence, semantic optimization, and generalized tableau minimization. The method ...
VLDB
2005
ACM
14 years 28 days ago
2005
ACM
The interaction between recursion in XPATH and recursion in DTDs makes it challenging to answer XPATH queries on XML data that is stored in an RDBMS via schema-based shredding. We...
SIGMOD
2008
ACM
13 years 7 months ago
2008
ACM
Tree pattern queries (TPQs) provide a natural and easy formalism to query tree-structured XML data, and the efficient processing of such queries has attracted a lot of attention. ...