منابع مشابه
EquiX - A Search and Query Language for XML
EquiX is a search language for XML that combines the power of querying with the simplicity of searching. Requirements for such languages are discussed and it is shown that EquiX meets the necessary criteria. Both a graph-based abstract syntax and a formal concrete syntax are presented for EquiX queries. In addition, the semantics is defined and an evaluation algorithm is presented. The evaluati...
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An important application of XML is the interchange of electronic data (EDI) between multiple data sources on the Web. As XML data proliferates on the Web, applications will need to integrate and aggregate data from multiple source and clean and transform data to facilitate exchange. Data extraction, conversion, transformation, and integration are all well-understood database problems, and their...
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XML data are data which are not constrained by a schema, XML is fast emerging as a standard for data representation and exchange on the Word Wide Web, the ability to intelligently query XML data becomes increasingly important. In this paper we propose a recursive query language XRQL for querying and restructuring XML data. The expressive power of XRQL is comparable to Fixpoint. XRQL language is...
متن کاملA Secure Query Language for XML Documents
The intrinsic standardized property of an XML document provides a convenient way to carry out data exchanges between heterogeneous platforms among organizations via the Internet. The Internet is a public network, and traditionally there has been little protection against unauthorized access to sensitive information, and attacks. Although the W3C proposed the XQuery language [3], which is design...
متن کاملUpdateable Views for an XML Query Language
We present an approach to updateable XML views, which is based on the Stack-Based Approach to query languages. Its novelty consists in introducing procedures overloading generic updating operations on virtual objects into a view definition. This overloading is implicit and users update virtual objects like stored objects. Due to procedures we support full algorithmic power of view definitions, ...
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ژورنال
عنوان ژورنال: Journal of the American Society for Information Science and Technology
سال: 2002
ISSN: 1532-2882,1532-2890
DOI: 10.1002/asi.10058