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XGL: a graphical query language for XML

2003; Institute of Electrical and Electronics Engineers; Linguagem: Inglês

10.1109/ideas.2002.1029660

1098-8068

Sergio Flesca, E. Furfaro, Sergio Greco,

Data Management and Algorithms

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.