269 search results - page 12 / 54 » On Tree Pattern Query Rewriting Using Views |
SIGMOD
2008
ACM
14 years 11 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. ...
VLDB
2004
ACM
15 years 5 months ago
2004
ACM
This paper addresses the question of updating relational databases through XML views. Using query trees to capture the notions of selection, projection, nesting, grouping, and het...
SIGMOD
2004
ACM
15 years 12 months ago
2004
ACM
Current day database applications, with large numbers of users, require fine-grained access control mechanisms, at the level of individual tuples, not just entire relations/views,...
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SIGMOD
2000
ACM
15 years 4 months ago
2000
ACM
We investigate the problem of using materialized views to answer SQL queries. We focus on modern decision-support queries, which involve joins, arithmetic operations and other (po...
DBPL
2009
Springer
15 years 6 months ago
2009
Springer
In this paper, we revisit the view based security framework for XML without imposing any of the previously considered restrictions on the class of queries, the class of DTDs, and t...