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PSVI
XSD (XML Schema Definition), a recommendation of the World Wide Web Consortium (W3C), specifies how to formally describe the elements in an Extensible Markup Language (XML) document. It can be used by programmers to verify each piece of item content in a document, to assure it adheres to the description of the element it is placed in. Like all XML schema languages, XSD can be used to express a set of rules to which an XML document must conform to be considered "valid" according to that schema. However, unlike most other schema languages, XSD was also designed with the intent that determination of a document's validity would produce a collection of information adhering to specific data types. Such a post-validation '' infoset'' can be useful in the development of XML document processing software. History XML Schema, published as a W3C recommendation in May 2001, is one of several XML schema languages. It was the first separate schema language for XML to achieve Recommendation sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XML Schema Languages
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. There are languages developed specifically to express XML schemas. The document type definition (DTD) language, which is native to the XML specification, is a schema language that is of relatively limited capability, but that also has other uses in XML aside from the expression of schemas. Two more expressive XML schema languages in widespread use are XML Schema (with a capital ''S'') and RELAX NG. The mechanism for associating an XML docume ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XML Information Set
XML Information Set (XML Infoset) is a W3C specification that defines an abstract data model of an XML document in terms of a set of ''information items''. The XML Infoset provides a standardized way to refer to the components of XML documents, serving as a foundation for XML-related standards and tools. The XML Infoset identifies eleven different types of information items, including the document, elements, attributes, processing instructions, characters, and namespaces. Each information item has a set of named properties, which represent specific aspects of the XML document being modeled. For example, an element information item has properties such as the element's namespace name, local name, children, and attributes. An XML document has an information set if it is well-formed and satisfies the namespace constraints. There is no requirement for an XML document to be valid according to a DTD or XML Schema in order to have an information set. XML was initially developed wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Wide Web Consortium
The World Wide Web Consortium (W3C) is the main international standards organization for the World Wide Web. Founded in 1994 by Tim Berners-Lee, the consortium is made up of member organizations that maintain full-time staff working together in the development of standards for the World Wide Web. W3C has 350 members. The organization has been led by CEO Seth Dobbs since October 2023. W3C also engages in education and outreach, develops software and serves as an open forum for discussion about the Web. History The World Wide Web Consortium (W3C) was founded in 1994 by Tim Berners-Lee after he left the European Organization for Nuclear Research (CERN) in October 1994. It was founded at the Massachusetts Institute of Technology (MIT) Laboratory for Computer Science with support from the European Commission, and the Defense Advanced Research Projects Agency, which had pioneered the ARPANET, the most direct predecessor to the modern Internet. It was located in Technology Square (Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JSON Schema
JSON (JavaScript Object Notation, pronounced or ) is an open standard file format and data interchange format that uses human-readable text to store and transmit data objects consisting of name–value pairs and arrays (or other serializable values). It is a commonly used data format with diverse uses in electronic data interchange, including that of web applications with servers. JSON is a language-independent data format. It was derived from JavaScript, but many modern programming languages include code to generate and parse JSON-format data. JSON filenames use the extension .json. Douglas Crockford originally specified the JSON format in the early 2000s. Transcript: He and Chip Morningstar sent the first JSON message in April 2001. Naming and pronunciation The 2017 international standard (ECMA-404 and ISO/IEC 21778:2017) specifies that "JSON" is "pronounced , as in 'Jason and The Argonauts. The first (2013) edition of ECMA-404 did not address the pronunciation. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canonical Model
A canonical model is a design pattern used to communicate between different data formats. Essentially: create a data model which is a superset of all the others ("canonical"), and create a "translator" module or layer to/from which all existing modules exchange data with other modules. The canonical model acts as a middleman. Each model now only needs to know how to communicate with the canonical model and doesn't need to know the implementation details of the other modules. Details A form of enterprise application integration, it is intended to reduce costs and standardize on agreed data definitions associated with integrating business systems. A canonical model is any model that is canonical in nature, meaning a model that is in the simplest form possible based on a standard enterprise application integration (EAI) solution. Most organizations also adopt a set of standards for message structure and content (message payload). The desire for consistent message payload resul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unique Particle Attribution
The Unique Particle Attribution (UPA) rule is a mechanism to prevent ambiguity in W3C XML Schema version 1.0. Due to the UPA rule the XML schema fragment given below is prohibited: Given the XML instance fragment: 42 it is ambiguous whether should be associated with the element declaration (xsd:element name="x"), or the wildcard (xsd:any). This ambiguity violates the UPA rule and the corresponding XML schema therefore needs to be rejected by XML schema processors compliant to W3C XML Schema XSD (XML Schema Definition), a recommendation of the World Wide Web Consortium (W3C), specifies how to formally describe the elements in an Extensible Markup Language (XML) document. It can be used by programmers to verify each piece of item cont ... version 1.0. This particular example no longer violates the Unique Particle Attribute constraint in XML Schema version 1.1, which disambiguates it by saying that when an element matches both an element particle and a wildcar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XML Schema Editors
The W3C's XML Schema Recommendation defines a formal mechanism for describing XML Extensible Markup Language (XML) is a markup language and file format for storing, transmitting, and reconstructing data. It defines a set of rules for encoding electronic document, documents in a format that is both human-readable and Machine-r ... documents. The standard has become popular and is used by the majority of standards bodies when describing their data. The standard is versatile, allowing for programming concepts such as inheritance and type creation, but it is complex. The standard itself is highly technical and published in 3 different parts, making it difficult to understand without committing large amounts of time. XML schema editor tools The problems users face when working with the XSD standard can be mitigated with the use of graphical editing tools. Although any text-based editor can be used to edit an XML Schema, a graphical editor offers advantages; allowing the structure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Types Of XML Schemas
This is a list of notable XML schemas in use on the Internet sorted by purpose. XML schemas can be used to create XML documents for a wide range of purposes such as syndication, general exchange, and storage of data in a standard format. Bookmarks * XBEL - XML Bookmark Exchange Language Brewing * BeerXML - a free XML based data description standard for the exchange of brewing data Business * ACORD data standards - Insurance Industry XML schemas specifications by Association for Cooperative Operations Research and Development * Europass XML - XML vocabulary describing the information contained in a Curriculum Vitae (CV), Language Passport (LP) and European Skills Passport (ESP) * OSCRE - Open Standards Consortium for Real Estate format for data exchange within the real estate industry * UBL - Defining a common XML library of business documents (purchase orders, invoices, etc.) by Oasis *XBRL Extensible Business Reporting Language for International Financial Reporting Stand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schematron
Schematron is a rule-based validation language for making assertions about the presence or absence of patterns in XML trees. It is a structural schema language expressed in XML using a small number of elements and XPath languages. In many implementations, Schematron XML is processed into XSLT code for deployment anywhere that XSLT can be used. Schematron is capable of expressing constraints in ways that other XML schema languages like XML Schema and DTD cannot. For example, it can require that the content of an element be controlled by one of its siblings. Or it can request or require that the root element, regardless of what element that is, must have specific attributes. Schematron can also specify required relationships between multiple XML files. Constraints and content rules may be associated with "plain-English" (or any language) validation error messages, allowing translation of numeric Schematron error codes into meaningful user error messages. Users of Schematron define ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Webber (computer Scientist)
David R.R. Webber (born 1955) is an Information technologist specializing in applications of XML, ebXML and EDI to standards-based information exchanges. He is a senior member of the ACM since 2007. David Webber is one of the originators of the ebXML initiative for global electronic business via the internet. He is holder of two U.S. Patents (5909570, 6418400) for electronic information exchange transformation and those patents are now cited widely by 37 other patents. David Webber has implemented several unique groundbreaking computer solutions in his career including the world's first airport gate scheduling system (King Khalid International Airport, Riyadh, 1987), the SeeMail email client for MCIMail written in Prolog, the patented GoXML system for XMLGlobal, the ShroudIt obfuscation system for LNK Corp, and the VisualScript tool for Smartdraw Inc. More recently David has contributed to open XML standards development with OASIS as technical editor for BCM (Business Centric- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rick Jelliffe
Richard (Rick) Alan Jelliffe (born 1960) is an Australian programmer and standards activist (ISO, W3C, IETF), particularly associated with web standards, markup languages, internationalization and schema languages. He is the founder and Chief Technical Officer of Topologi Pty. Ltd, an XML tools vendor in Sydney. He has a degree in economics from the University of Sydney. Career Jelliffe is the inventor of the Schematron schema language; its core idea of using XPath to state constraints has been widely adopted and adapted. He is the editor of the ISO International Standard 19757-3 ''Document Schema Definition Languages – Part 3: Path Based Rule Languages (Schematron).'' In 1999 to 2001, Jelliffe worked at Academia Sinica, Taipei, Taiwan. The Chinese XML Now! website provides Chinese and English information and test files on XML. Jelliffe has also made an English/Chinese multilingual typesetting system used to publish PRC trade laws. He has been an invited expert on Internatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
