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As a markup language, XML labels, categorizes, and structurally organizes information. [8]: 11 XML tags represent the data structure and contain metadata. What's within the tags is data, encoded in the way the XML standard specifies. [8]: 11 An additional XML schema (XSD) defines the necessary metadata for interpreting and validating XML.
XML database. An XML database is a data persistence software system that allows data to be specified, and sometimes stored, in XML format. This data can be queried, transformed, exported and returned to a calling system. XML databases are a flavor of document-oriented databases which are in turn a category of NoSQL database.
xCal: the XML-compliant representation of the iCalendar standard. XCES: an XML based standard to codify text corpus. XDI: sharing, linking, and synchronizing data using machine-readable structured documents that use an RDF vocabulary based on XRI structured identifiers. XDuce: an XML transformation language.
SQL/XML. SQL/XML or XML-Related Specifications is part 14 of the Structured Query Language (SQL) specification. In addition to the traditional predefined SQL data types like NUMERIC, CHAR, TIMESTAMP, ... it introduces the predefined data type XML together with constructors, several routines, functions, and XML-to-SQL data type mappings to ...
MARCXML - a direct mapping of the MARC standard to XML syntax. METS - a schema for aggregating in a single XML file descriptive, administrative, and structural metadata about a digital object. MODS - a schema for a bibliographic element set and maintained by the Network Development and MARC Standards Office of the Library of Congress [6]
In HTML and XML, a numeric character reference refers to a character by its Universal Character Set / Unicode code point, and uses the format: &#xhhhh; or. &#nnnn; where the x must be lowercase in XML documents, hhhh is the code point in hexadecimal form, and nnnn is the code point in decimal form. The hhhh (or nnnn) may be any number of ...
Tag (metadata) A tag cloud with terms related to Web 2.0. In information systems, a tag is a keyword or term assigned to a piece of information (such as an Internet bookmark, multimedia, database record, or computer file). This kind of metadata helps describe an item and allows it to be found again by browsing or searching. [1]
XQuery at Wikibooks. XQuery (XML Query) is a query and functional programming language that queries and transforms collections of structured and unstructured data, usually in the form of XML, text and with vendor-specific extensions for other data formats (JSON, binary, etc.). The language is developed by the XML Query working group of the W3C.