716 search results - page 108 / 144 » Optimizing Queries in Extended Relational Databases |
BTW
2009
Springer
15 years 2 months ago
2009
Springer
: Simplifying data programming is a core mission of data management research. The issue at stake is to help engineers build efficient and robust data-centric applications. The fron...
102
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PODS
2008
ACM
15 years 11 months ago
2008
ACM
We consider the navigational core of XPath, extended with two operators: the Kleene star for taking the transitive closure of path expressions, and a subtree relativisation operat...
SP
1996
IEEE
15 years 3 months ago
1996
IEEE
View-based access control enables content-based and context-based security, as opposed to container-based security provided in operating systems. However, view-based access contro...
179
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VLDB
2007
ACM
15 years 11 months ago
2007
ACM
Given a set of model graphs D and a query graph q, containment search aims to find all model graphs g D such that q contains g (q g). Due to the wide adoption of graph models, f...
PODS
2008
ACM
15 years 11 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...