Evaluating lock-based protocols for cooperation on XML documents
ACM SIGMOD Record
A dataguide-based concurrency control protocol for cooperation on XML data
ADBIS'05 Proceedings of the 9th East European conference on Advances in Databases and Information Systems
SXDGL: snapshot based concurrency control protocol for XML data
XSym'07 Proceedings of the 5th international conference on Database and XML Technologies
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The eXtensible Markup Language (XML) is well acceptedin several different Web application areas. As soonas many users and applications work concurrently on thesame collection of XML documents - e.g. on an XMLdatabase via a Web interface-isolating accesses and modificationsof different transactions becomes an important issue.We discuss four different core protocols for synchronizingaccess to and modifications of XML document collections.These core protocols synchronize structure traversalsand modifications. They are meant to be integrated intoa native XML base management System (XBMS) and arebased on two phase locking. We also demonstrate the differentdegrees of cooperation that are possible with theseprotocols.