untitled An XML schema is a description of a type of XML document, typically expressed in terms of constraints on the structure and content of documents of that type, above and beyond the basic syntactical constraints imposed by XML itself. These constraints are generally expressed using some combination of grammatical rules governing the order of elements, Boolean predicates that the content must satisfy, data types governing the content of elements and attributes, and more specialized rules such as uniqueness and referential integrity constraints. The mechanism for associating an XML document with a schema varies according to the schema language. The association may be achieved via markup within the XML document itself, or via some external means. Capitalization[edit] Validation[edit] The process of checking to see if an XML document conforms to a schema is called validation, which is separate from XML's core concept of syntactic well-formedness. XML schema languages[edit] See also[edit]
XML database An XML database is a data persistence software system that allows data to be stored in XML format. These data can then be queried, exported and serialized into the desired format. XML databases are usually associated with document-oriented databases. Two major classes of XML database exist:[1] XML-enabled: these may either map XML to traditional database structures (such as a relational database[2]), accepting XML as input and rendering XML as output, or more recently support native XML types within the traditional database. This term implies that the database processes the XML itself (as opposed to relying on middleware).Native XML (NXD): the internal model of such databases depends on XML and uses XML documents as the fundamental unit of storage, which are, however, not necessarily stored in the form of text files. Rationale for XML in databases[edit] XML Enabled databases[edit] RDBMS that support the ISO XML Type are: Example of XML Type Query in IBM DB2 SQL[edit] Language features[edit]
Initial implementation of a comparative data analy... [Evol Bioi XML Tutorial untitled XML Schema, published as a W3C recommendation in May 2001,[1] is one of several XML schema languages. It was the first separate schema language for XML to achieve Recommendation status by the W3C. Because of confusion between XML Schema as a specific W3C specification, and the use of the same term to describe schema languages in general, some parts of the user community referred to this language as WXS, an initialism for W3C XML Schema, while others referred to it as XSD, an initialism for XML Schema Definition.[2][3] In Version 1.1 the W3C has chosen to adopt XSD as the preferred name, and that is the name used in this article. Like all XML schema languages, XSD can be used to express a set of rules to which an XML document must conform in order to be considered 'valid' according to that schema. In its appendix of references, the XSD specification acknowledges the influence of DTDs and other early XML schema efforts such as DDML, SOX, XML-Data, and XDR. <? General problems: Other
XSLT XSLT (Extensible Stylesheet Language Transformations) is a language for transforming XML documents into other XML documents,[1] or other objects such as HTML for web pages, plain text or into XSL Formatting Objects which can then be converted to PDF, PostScript and PNG.[2] The original document is not changed; rather, a new document is created based on the content of an existing one.[3] Typically, input documents are XML files, but anything from which the processor can build an XQuery and XPath Data Model can be used, for example relational database tables, or geographical information systems.[1] XSLT is a Turing-complete language, meaning it can specify any computation that can be performed by a computer.[4][5] History[edit] Design and processing model[edit] Diagram of the basic elements and process flow of Extensible Stylesheet Language Transformations. Processor implementations[edit] Performance[edit] Most early XSLT processors were interpreters. XSLT and XPath[edit] XSLT media types[edit] <?
GoWeb: a semantic search engine for the life scien... [BMC Bioin Extensible Markup Language (XML) Nearby: XML Specifications and Translations of them. Introduction Extensible Markup Language (XML) is a simple, very flexible text format derived from SGML (ISO 8879). Originally designed to meet the challenges of large-scale electronic publishing, XML is also playing an increasingly important role in the exchange of a wide variety of data on the Web and elsewhere. This page describes the work being done at W3C within the XML Activity, and how it is structured. You can find and download formal technical specifications here, because we publish them. You will find links to W3C Recommendations, Proposed Recommendations, Working Drafts, conformance test suites and other documents on the pages for each Working Group. Please do not send us email asking us to help you learn a language or specification; there are plenty of resources online, and the people editing and developing the specifications are very busy. Working Groups XSLT Working Group The Efficient XML Interchange Working Group Contact Note
DRM Digital Rights Management (DRM) is a class of technologies[1] that are used by hardware manufacturers, publishers, copyright holders, and individuals with the intent to control the use of digital content and devices after sale;[1][2][3] there are, however, many competing definitions.[4] With First-generation DRM software, the intent is to control copying; With Second-generation DRM, the intent is to control executing, viewing, copying, printing and altering of works or devices. The term is also sometimes referred to as copy protection, copy prevention, and copy control, although the correctness of doing so is disputed.[5] DRM is a set of access control technologies.[6][7] Companies such as Amazon, AT&T, AOL, Apple Inc., Google,[8] BBC, Microsoft, Electronic Arts, Sony, and Valve Corporation use digital rights management. The use of digital rights management is not universally accepted. Introduction[edit] Common DRM techniques[edit] Digital Rights Management Techniques include:
XPath Overview[edit] The XPath language is based on a tree representation of the XML document, and provides the ability to navigate around the tree, selecting nodes by a variety of criteria.[2][3] In popular use (though not in the official specification), an XPath expression is often referred to simply as "an XPath". Originally motivated by a desire to provide a common syntax and behavior model between XPointer and XSLT, subsets of the XPath query language are used in other W3C specifications such as XML Schema, XForms and the Internationalization Tag Set (ITS). XPath has been adopted by a number of XML processing libraries and tools, many of which also offer CSS Selectors, another W3C standard, as a simpler alternative to XPath. Versions[edit] There are currently three versions of XPath in use. XPath expression applied to an XML file Syntax and semantics (XPath 1.0)[edit] The most important kind of expression in XPath is a location path. Abbreviated syntax[edit] Expanded syntax[edit] comment() text()
HPD: an online integrated human pathway database e... [BMC Bioin C XML Schema If you want yours listed here, please send an announcement to xmlschema-dev. Recent changes / news: 2010-01-05 generate bindings from XML Schema 2009-11-19 Python XML Schema Bindings 2008-01-06 Visual Schema 2007-12-12 Stylus Studio 2008 released 2007-11-13 CodeSynthesis XSD/e 2.0.0 released 2007-11-04 Saxon 9.0 2007-10-23 Liquid XML Studio 2008 2007-10-17 Intel XML Software 2007-09-20 XSD/e version 1.1.0 2007-09-17 XMLSpy/Altova 2007-09-03 Xerces-C++ 2.8.0 2007-08-22 LMX V3.4 2007-08-16 SchemaXpert 2007-08-01 CodeSynthesis XSD 3.0.0 2007-06-05 xchecker 2007-05-17 oNVDL 2007-05-08 oXygen XML version 8.2 2007-01-22 DocFlex/XSD 2006-11-28LINQ to XSD 2006-11-17SchemaAgent 2007 2006-10-18 XSDBench 2006-09-22XmlPad2006-09-21 ITCworks 2006-09-19 xnsdoc 1.2 - XML Schema documentation generator 2006-09-13BRICS Schematools 2006-09-07EditiX Altova XML (XML Spy) Version 2008 of the Altova XML product line is available 2007-09-17 More info and screenshots: Castor