XGL: a graphical query language for XML

In this paper we present a graphical query language for XML. The language, based on a simple form of graph grammars, permits us to extract data and reorganize information in a new structure. As with most of the current query languages for XML, queries consist of two parts: one extracting a sub-graph...

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Bibliographic Details
Main Authors: Flesca, S., Furfaro, E., Greco, S.
Format: Conference Proceeding
Language:English
Subjects:
Bibliographies
Character generation
Data mining
Database languages
Production systems
Proposals
Standards development
Tree graphs
XML
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Summary:In this paper we present a graphical query language for XML. The language, based on a simple form of graph grammars, permits us to extract data and reorganize information in a new structure. As with most of the current query languages for XML, queries consist of two parts: one extracting a sub-graph and one constructing the output graph. The semantics of queries is given in terms of graph grammars. The use of graph grammars makes it possible to define, in a simple way, the structural properties of both the subgraph that has to be extracted and the graph that has to be constructed. By means of examples, we show the effectiveness and simplicity of our approach.
ISSN:1098-8068
DOI:10.1109/IDEAS.2002.1029660