PODS
2005
ACM
14 years 7 months ago
2005
ACM
All known algorithms for evaluating advanced XPath queries (e.g., ones with predicates or with closure axes) on XML streams employ buffers to temporarily store fragments of the do...
PODS
2005
ACM
14 years 7 months ago
2005
ACM
We consider here the exchange of Active XML (AXML) data, i.e., XML documents where some of the data is given explicitly while other parts are given only intensionally as calls to ...
PODS
2005
ACM
14 years 7 months ago
2005
ACM
PODS
2005
ACM
14 years 7 months ago
2005
ACM
We consider query optimization techniques for data intensive P2P applications. We show how to adapt an old technique from deductive databases, namely Query-Sub-Query (QSQ), to a s...
PODS
2005
ACM
14 years 7 months ago
2005
ACM
Some promising recent schemes for XML access control employ encryption for implementing security policies on published data, avoiding data duplication. In this paper we study one ...
PODS
2005
ACM
14 years 7 months ago
2005
ACM
PODS
2004
ACM
14 years 7 months ago
2004
ACM
Continuous queries in a Data Stream Management System (DSMS) rely on time as a basis for windows on streams and for defining a consistent semantics for multiple streams and updata...
PODS
2004
ACM
14 years 7 months ago
2004
ACM
PODS
2004
ACM
14 years 7 months ago
2004
ACM
PODS
2004
ACM
14 years 7 months ago
2004
ACM
We study the problem of answering queries over sources with limited access patterns. Given a first-order query Q, the problem is to decide whether there is an equivalent query whi...