Graph transformation to infer schemata from XML documents
Proceedings of the 2005 ACM symposium on Applied computing
Applying model-checking to solve queries on semistructured data
Computer Languages, Systems and Structures
Intensional query answering to XQuery expressions
DEXA'05 Proceedings of the 16th international conference on Database and Expert Systems Applications
XML challenges for the database community: past, present, and future
EDBT'04 Proceedings of the 2004 international conference on Current Trends in Database Technology
Visual specification and optimization of XQuery using VXQ
DEXA'06 Proceedings of the 17th international conference on Database and Expert Systems Applications
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XQuery, the standard query language for XML, is increasingly popular among computer scientists with a SQL background, since queries in XQuery and SQL require comparable skills to be formulated. However, the number of these experts is limited, and the availability of easierXQuery "dialects" could be extremely valuable.With this motivation in mind, we designed XQBE, a dialect of XQuery inspired by the QBE language (Query by Example). QBE, initially proposed as an alternative to SQL, has then become popular as the user-friendly query language supported by MS Access.XQBE starts from hierarchical structures, coherent with the hierarchical nature of XML, and uses one or more structures to denote the input documents, and one structure to denote the XML document produced in output. These structures are annotated to express selection predicates; explicit bindings connecting the nodes of these structures visualize the input/output mappings.