2002•Unpublished venueRequires access

Temporal query operators in XML databases

Kjetil Nørvåg

Abstract

The contents of an XML database or an XML/Web data warehouse is seldom static. New documents are created, documents are deleted, and more important: documents are updated. In many cases, we want to be able to search in historical versions, retrieve documents valid at a certain time, query changes to documents, etc. This can be supported by extending the system with temporal database features. In this paper we describe the new query operators needed in order to support an XML query language which supports temporal operations.

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Key concepts: Computer science, Information retrieval, XML database, Streaming XML, XML validation, Efficient XML Interchange, XML Schema Editor, Query language