| G. Moerkotte. YAXQL: A powerful and web-aware query language supporting query reuse. Technical report, University of Mannheim, January 2000. |
....query languages for semistructured data, structural queries in information retrieval, structure matching in graphs, and distance metrics for trees. Many query languages for semistructured data and XML in particular have been developed during the last years [AQM 97, RLS98, DFF 98, CJS99, Moe00] All languages support operators that allow to skip certain parts of the data. However, as already mentioned, they require that the user knows which parts have to be skipped. Furthermore, they do not consider how many nodes have to be left out in order to match the query. Thus, no ranking ....
G. Moerkotte. YAXQL: A powerful and web-aware query language supporting query reuse. Technical report, University of Mannheim, January 2000.
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