NDLI: Extending XML-RL with update

Content Provider	IEEE Xplore Digital Library
Author	Guoren Wang Mengchi Liu Li Lu
Copyright Year	2003
Description	Author affiliation: Sch. of Comput. Sci., Carleton Univ., Ottawa, Ont., Canada (Guoren Wang; Mengchi Liu; Li Lu)
Abstract	With the extensive use of XML in applications over the Web, how to update XML data is becoming an important issue because the role of XML has expanded beyond traditional applications, in which XML is used as a mean for data representation and exchange on the Web. This paper presents a novel declarative XML update language, which is an extension of the XML-RL query language. Compared with other existing XML update languages, it has the following features. First, it is the only XML data manipulation language based on a higher data model. All of the other update languages adopt so-called graph-based or tree-based data models. Therefore, update requests can be expressed in a more intuitive and natural way in our language than in the other languages. Second, our language is designed to deal with ordered and unordered data. Some of the existing languages cannot handle the order of documents. Third, our language can express complex update requests at multiple level in a hierarchy in a simple and fast way. Some existing languages have to express such complex requests in nested updates, which is too complicated and nonintuitive to comprehend for end users. Fourth, our language directly supports the functionality of updating complex objects while all other update language do not support these operations. Lastly, most of existing languages use rename to modify attribute and element names, which is a different way from updates on value. Our language modifies tag names, values, and objects in a unified way by the introduction of three kinds of logical binding variables: object variables, value variables, and name variables. The powerful ability of our language is shown by various examples.
Starting Page	66
Ending Page	75
File Size	280175
Page Count	10
File Format	PDF
ISBN	0769519814
ISSN	10988068
DOI	10.1109/IDEAS.2003.1214912
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-07-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	XML Data models Tree graphs Application software Computer science Database languages Data mining Data engineering
Content Type	Text
Resource Type	Article

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