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IJSSE
2011
127views more  IJSSE 2011»
13 years 4 months ago
A Formal Language for XML Authorisations Based on Answer Set Programming and Temporal Interval Logic Constraints
The Extensible Markup Language is susceptible to security breaches because it does not incorporate methods to protect the information it encodes. Our work presented in this paper f...
Sean Policarpio, Yan Zhang
DEXAW
2007
IEEE
124views Database» more  DEXAW 2007»
14 years 1 months ago
XML Query Optimisation: Specify your Selectivity
The problem of efficiently evaluating XPath and XQuery queries has become increasingly significant since more and more XML data is stored in its native form. We propose a novel op...
Sven Hartmann, Sebastian Link
DEBU
1999
112views more  DEBU 1999»
13 years 9 months ago
Describing and Manipulating XML Data
This paper presents a brief overview of data management using the Extensible Markup Language (XML). It presents the basics of XML and the DTDs used to constrain XML data, and desc...
Sudarshan S. Chawathe
XSYM
2005
Springer
154views Database» more  XSYM 2005»
14 years 3 months ago
An Extended Preorder Index for Optimising XPath Expressions
Many of the problems with native XML databases relate to query performance and subsequently, it can be difficult to convince traditional database users of the benefits of using se...
Martin F. O'Connor, Zohra Bellahsene, Mark Roantre...
PVLDB
2010
125views more  PVLDB 2010»
13 years 8 months ago
The Impact of Virtual Views on Containment
Virtual views are a mechanism that facilitates re-use and makes queries easier to express. However the use of iterative view definitions makes very simple query evaluation and an...
Michael Benedikt, Georg Gottlob