XML-GL: a graphical language for querying and restructuring XML documents

The growing acceptance of XML as a standard for semi-structured documents on the Web opens up challenging opportunities for Web query languages. In this paper we introduce XML-GL, a graphical query language for XML documents. The use of a visual formalism for representing both the content of XML doc...

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Bibliographic Details
Published in:Computer networks (1999) 1999-05, Vol.31 (11), p.1171-1187
Main Authors: Ceri, Stefano, Comai, Sara, Damiani, Ernesto, Fraternali, Piero, Paraboschi, Stefano, Tanca, Letizia
Format: Article
Language:English
Subjects:
Applied sciences
Computer graphics
Exact sciences and technology
Extensible Markup Language
Graphical queries
Interconnected networks
Networks and services in france and abroad
Programming languages
Queries
Query languages
Studies
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
World Wide Web
XML
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Summary:The growing acceptance of XML as a standard for semi-structured documents on the Web opens up challenging opportunities for Web query languages. In this paper we introduce XML-GL, a graphical query language for XML documents. The use of a visual formalism for representing both the content of XML documents (and of their DTDs) and the syntax and semantics of queries enables an intuitive expression of queries, even when they are rather complex. XML-GL is inspired by G-log, a general purpose, logic-based language for querying structured and semi-structured data. The paper presents the basic capabilities of XML-GL through a sequence of examples of increasing complexity.
ISSN:1389-1286
1872-7069
DOI:10.1016/S1389-1286(99)00014-6