Title
Path locks for XML document collaborationPath locks for XML document collaboration
Author
Faculty/Department
Faculty of Sciences. Mathematics and Computer Science
Research group
Department of Mathematics - Computer Sciences
Publication type
conferenceObject
Publication
Los alamitos :Ieee computer soc, [*]
Subject
Engineering sciences. Technology
Mass communications
Computer. Automation
Source (book)
WISE 2002 : proceedings of the 3rd International Conference on Web Information Systems Engineering, December 11-14, 2002, Singapore
ISBN
0-7695-1766-8
ISI
000180273700011
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
The hierarchical and semistructured nature of XML data can cause complicated types of update-behavior The updates are not limited to entire document trees, but can involve subtrees and even individual elements. These document parts correspond to e.g. sections in text documents or sub-diagrams in vector graphics files. Providing suitable locking mechanisms for semi-structured data can significantly improve collaboration systems that store their data as XML documents. In this paper we show that concurrency control mechanisms in CVS, relational, and object oriented database systems are inadequate for collaboration systems based on semistructured data. We therefore propose a new locking scheme of fine granularity based on path locks. We also show that our proposed mechanism avoids conflicts by ensuring serializability, that it supports both top-down and bottom-up query evaluation, and that it is relatively efficient.
E-info
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