ICDT
2007
ACM
13 years 10 months ago
2007
ACM
Abstract. Recent studies have proposed structural summary techniques for pathquery evaluation on semi-structured data sources. One major line of this research
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
In this paper, we introduce preferential regular path queries. These are regular path queries whose symbols are annotated with preference weights for “scaling” up or down the i...
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
Abstract. A common approach to XML updates is to extend XQuery with update operations. This approach results in very expressive languages which are convenient for users but are dif...
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
In this paper we investigate the problem of validating, with constant memory, streaming XML documents with respect to a DTD. Such constant memory validations can only be performed ...
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
Abstract. We define and study formal privacy guarantees for information integration systems, where sources are related to a public schema by mappings given by source-to-target dep...
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
We consider data dissemination in a peer-to-peer network, where each user wishes to obtain some subset of the available information objects. In most of the modern algorithms for su...
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
Stay macro tree transducers (smtts) are an expressive formalism for reasoning about XSLT-like document transformations. Here, we consider the exact type checking problem for smtts....
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
Query containment is a fundamental problem of databases. Given two queries q1 and q2, it asks whether the set of answers to q1 is included in the set of answers to q2 for any datab...
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
Moving objects produce trajectories. We describe a data model for trajectories and trajectory samples and an efficient way of modeling uncertainty via beads for trajectory samples....