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Calculus and Algebra for Distributed Data Management Abiteboul, Serge Distributed data management XML Web Web service The sharing of content by communities of users (e.g., scientists) in a P2P context remains cumbersome. We argue that main reasons for this is the lack of calculus and algebra for distributed data management. We present the ActiveXML language that extends the XML language with features to handle distribution. More precisely, ActiveXML documents are XML documents with a special syntax for specifying the embedding of Web service calls, e.g. XML queries such as XQueries. We also present ActiveXML algebra that extends ActiveXML notably with explicit control of data exchanges. ActiveXML algebra allows describing query plans, and exchanging them between peers. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Serge Abiteboul 2007 Is Part Of Dagstuhl Seminar Proceedings, Volume 7051, Programming Paradigms for the Web: Web Programming and Web Services (2007) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/DagSemProc.07051.4 urn:nbn:de:0030-drops-11261 https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07051.4 eng https://creativecommons.org/licenses/by/4.0/legalcode