∠, the angle symbol in Unicode is List of XML and HTML character entity references | U + 2220

Berkeley DB is also used as the common name for three distinct products ; Oracle Berkeley DB, Berkeley DB Java Edition, and Berkeley DB XML.

DB XML is written in C ++ and supports multiple language bindings, including C ++, Java ( via JNI ), Perl and Python.

XHTML, which is an XML application, supports the HTML entity set, along with XML's predefined entities.

XQuery is an XML based database language ( also named XQL ).

XML is open, machine-readable and cross-platform data format widely used for interoperability among different IT systems.

A Document Type Definition ( DTD ) is a set of markup declarations that define a document type for an SGML-family markup language ( SGML, XML, HTML ).

A DTD is associated with an XML or SGML document by means of a Document Type Declaration.

( Notations declared in the DTD are also referencing external entities, but these unparsed entities are not needed for the validation of documents in the standalone mode of these parsers: the validation of all external entities referenced by notations is left to the application using the SGML or XML parser ).

However this behaviour is application-specific, and requires that the application maintains a catalog of known URNs to resolve them into the notations that have been parsed in a standard SGML or XML parser.

The XML DTD syntax is one of several XML schema languages.

In addition, documents for these XML schema languages have to be parsed separately, so validating the schema of XML documents in pure standalone mode is not really possible with these languages: the document type declaration remains necessary for at least identifying ( with a XML Catalog ) the schema used in the parsed XML document and that will be validated in another language.

In the example below, the XML document is declared with because it has an external subset in its document type declaration:

If the XML document type declaration includes any SYSTEM identifier for the external subset, it can't be safely processed as standalone: the URI should be retrieved, otherwise there may be unknown named character entities whose definition may be needed to correctly parse the effective XML syntax in the internal subset or in the document body ( the XML syntax parsing is normally performed after the substitution of all named entities, excluding the five entities that are predefined in XML and that are implicitly substituted after parsing the XML document into lexical tokens ).

However, many browsers do not check that an XML document conforms to the rules in the DTD ; they are only required to check that the DTD is syntactically correct.

* XML Schema, also referred to as XML Schema Definition ( XSD ), has achieved Recommendation status within the W3C, and is popular for " data oriented " ( that is, transactional non-publishing ) XML use because of its stronger typing and easier round-tripping to Java declarations.

XML ( Extensible Markup Language ) is a meta markup language that is now widely used.

A Recommendation may be updated by separately published Errata until enough substantial edits accumulate, at which time a new edition of the Recommendation may be produced ( e. g., XML is now in its fifth edition ).

DocBook originally started out as an SGML application, but an equivalent XML application was developed and has now replaced the SGML one for most uses.

The adopted technology chosen to develop the protocols was XML, where it now provides a wrapper around all messages legacy or contemporary.

There are now other XML standards for representing metadata.

* W3C XML Pipeline Language ( XPL ) Version 1. 0 ( Draft ) is specified in a W3C Submission and a component of Orbeon Presentation Server OPS ( now called Orbeon Forms ).

For example, a program that once could only save in text format is now demanded to save in HTML, XML, XLS, CSV, PDF, DOC, and other formats.

With the advent of standardized, highly structured markup languages, such as Extensible Markup Language ( XML ), the decreasing costs of data storage, and faster and cheaper data communication networks, compromises between human-readability and machine-readability are now more common-place than they were in the past.

Proponents of APEX have now mostly put their support behind XMPP as it is also based on XML.

* Tamino Information Server-Information server based on XML for the storage, management and transfer of structured and unstructured data, now called webMethods Tamino

Version 13 ( 2006 ) Hair, Rigid-body Dynamics, File formats now XML based.

Bibliographic records are now stored as an XML element, with sub-elements for the various metadata.

The XSLT language itself was originally conceived only for this purpose ; it is now in widespread use for more general XML transformations.

IntelliSense is now supported by the Visual Studio editors for C ++, C #, J #, Visual Basic, XML, HTML and XSLT among others.

GladeXML is the XML format that was used with conjunction with libglade, which is now deprecated.

A Recommendation may be updated by separately-published Errata until enough substantial edits accumulate, at which time a new edition of the Recommendation may be produced ( e. g., XML is now in its fifth edition ).

Standardisation of protocols and data formats has been a problem but is now growing in the industry and XML is increasingly being adopted for data exchange.

eXcelon also created an XML IDE, Stylus Studio, which is now sold by Progress Software.

In 2007, IBM added zAAP support to the XML System Services for z / OS, so now products such as DB2 9 for z / OS can also take advantage of zAAPs for XML-related processing.

* Xen, a research programming language for type-safe XML access, now part of Cω

Amaya started as an HTML and CSS editor and now supports XML, XHTML, MathML, and SVG.

* Use of XML policies with DNS-this was reduced to what is now known as Sender ID

* TrAX, the Transformation API for XML ( now considered a part of JAXP )

With the appearance of XML as an alternative to SGML, XML's associated stylesheet language XSL was also widely and rapidly adopted, from around 1999.

Binary XML has been put forward as one method of reducing transfer and processing times for XML and, while there are several competing formats, none has been widely adopted by a standards organization or accepted as a de facto standard.

Until May 2010, there was no widely used standard for XML pipeline languages.

The most widely used content packaging format is that defined by IMS Global, which uses an XML manifest file called imsmanifest. xml wrapped up inside a zip file.

It was the first domain specific implementation based strictly on XML, first based on a DTD and later on XML Schema, the most robust and widely used system for precise information management in many areas.

It is a self-describing protocol in many ways similar to other self-describing protocols such as the newer XML ; XML representation of Business content of FIX messages is known as FIXML but FIXML is not widely deployed.

The major challenge for binary XML is to create a single, widely adopted standard.

The data fetched by an Ajax request is typically formatted in XML or JSON ( JavaScript Object Notation ) format, two widely used structured data formats.

It leverages widely used technologies such as XML for data representation, XDR for compact, portable data transport, and RRDtool for data storage and visualization.