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XML is a data model and representation format for semi-structured data. It is becoming the standard for data exchange between web-applications. The access to XML data is facilitated by Web Services, programs over the

In this paper, we study query evaluation on Active XML documents (AXML for short), a new generation of XML documents that has recently gained popularity. AXML documents are XML documents whose content is given partly extensionally, by explicit data elements, and partly intensionally, by embedded

(prior to enacting an application) in order to rewrite it into one whose execution will be more performant. OptimAX builds on the ActiveXML (AXML) data-centric Web service composition language, and demonstrates how database-style techniques can be efficiently integrated in a loosely-coupled, distributed

ABSTRACT An active XML (AXML) document contains tags representing calls to Web services. Therefore, retrieving its contents consists in materializing its data elements by invoking the embedded service calls in a P2P network. In this process, the result of some service calls can be used as input

-oriented framework for integrating real-time data autonomously. Our framework utilizes Web standards to integrate data from heterogeneous and distributed sources. It exploits the XML language to address data heterogeneity, Web services to tackle data distribution, and Active XML (AXML) to store integrated data. Our

Abstract—This paper proposes a document based framework for the modeling of web-based choreographies involving a tight combination of workflow and data management. Our starting point is Active XML proposed by S. Abiteboul — AXML documents are XML documents with embedded service calls. We enhance

We propose a peer-based architecture that allows for the integration of distributed data and web services. It relies on a language, Active XML, where (1) documents embed calls to web services that are used to enrich them, and (2) new web services may be defined by XQuery queries on such active

Active XML (AXML) documents combine extensional XML data with intentional data defined through Web service calls. The dynamic properties of these documents pose challenges to both storage and data materialization techniques. We present ARAXA, a non-intrusive approach to store AXML documents

Abstract. Satisfiability is an important problem of queries for XML documents. This paper focuses on the satisfiability of tree pattern queries for Active XML(AXML for short) documents conforming to a given AXML schema. An AXML document is an XML document where some data is given explicitly