High Quality Content by WIKIPEDIA articles! XUpdate is a lightweight XML query language for modifying XML data. After some early enthusiastic development by a small team, the development of the standard faltered around the end of 2000 and it has never found widespread adoption. However, it has found a niche market of users not content to wait for the XQuery Update Facility extension of the W3C standard, Xquery. Query languages are computer languages used to make queries into databases and information systems. Broadly, query languages can be classified according to whether they are database query languages or information retrieval query languages.

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