83 search results - page 15 / 17 » Rewriting Regular XPath Queries on XML Views |
EDBT
2006
ACM
14 years 7 months ago
2006
ACM
In authorization-transparent access control, users formulate their queries against the database schema rather than against authorization views that transform and hide data. The Tru...
DBPL
2001
Springer
13 years 11 months ago
2001
Springer
Abstract. We are interested in the theoretical foundations of the optimization of conjunctive regular path queries (CRPQs). The basic problem here is deciding query containment bot...
PVLDB
2010
13 years 5 months ago
2010
Independence analysis is the problem of determining whether an update affects the result of a query, e.g. a constraint or materialized view. We develop a new, modular framework fo...
BNCOD
2007
13 years 8 months ago
2007
Order is essential for XML query processing. Efficient XML processing with order consideration over relational storage is non-trivial, especially for complex nested XQuery expressi...
ICDE
2008
IEEE
14 years 8 months ago
2008
IEEE
ct The backbone of the XML data model, namely ordered, unranked trees, is inherently recursive and it is natural to equip the associated languages with constructs that can query su...