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In this paper, we present a unifying approach to specifying and verifying specification-oriented XML constraints. The formal tree model and the XML constraint logic are developed to describe the XML documents and constraints respectively. The XML constraint logic, as an extension of the first order logic, is constructed and interpreted in the framework of our formal tree model, where the node domain...
XML has been widely applied in kinds of areas and applications as a data exchange format. Recently, plenty of of languages based on XML emerge. There are many constraints specified by natural language in these XML-based language specifications to regulate the rules that are supposed to be obeyed by designers or programmers. To specify those constraints precisely, we present a relational calculus to...
In this paper, we propose an approach to simulation and validation of Web services choreography described by WS-CDL. Simulation of Web services choreography is important to analyze and test the choreography model written by SOA designers. On the other hand, CDL specification regulates the correct behaviors a CDL program has to obey. Thus, constraints are specified in CDL specification including static,...
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