XmlGen

What are the properties of XML data?

Many languages have emerged with XML. The language used to show what elements and attributes are in an XML document is called DTD. There is another language called XSchema, which performs a similar function to DTD but has extra features such as determining the validity criteria for the values of elements and attributes, which is actually written in XML. XPath is used to specify the position of a particular node in an XML document. XSL is used to convert an XML to another format, i.e. another XML, plain text or HTML. XSL is an XML language. XLink is used to link from one XML document to another XML document, and XPointer is used to point from one node to another in the same XML document.

XML has many applications. XHTML, XML version of HTML; MathML, a language used to specify mathematical expressions; SVG is a language for creating two-dimensional graphics via text, SMIL is a language for using multimedia components together. However, XML is not limited to these. In fact, each programmer can create one or more languages for himself.

What should the XML data contain?

A root element is all that needs to be in an XML document.<exam/>expression is sufficient. Although not required, the introductory part called 'prologue' is usually included

How Markup Language and XML Emerged?

The origin of XML, which has a wide usage area in the electronic environment and is designed to be read by both humans and machines, is based on the GML (Generalized Markup Language) that was introduced at IBM in the late 1960s.

In 1969, Charles Goldfarb, a researcher at IBM, was working on a simple document management system designed for law firms, and together with Edward Mosher and Raymond Lorie, in an environment where a lot of documents are processed, he created a markup language for text editing, formatting, and subsystems information retrieval. takes it out. Thanks to this markup language, it was possible to add annotations by tagging texts, and its name became Generalized Markup Language (GML).

In fact, according to his later statement, the reason why they put the name in this way was that the abbreviation consisted of the initials of their surnames. Goldfarb coined the term 'markup language' for text tagging, data modeling, and metalanguage. With this idea, Goldfarb is seen as the 'father of markup language'.

GML was the first comprehensive innovation to provide a general markup facility. With this development, defined tags were used for the first time. The system allowed us to define our own markup/formatting terms. It also allowed users to choose which markup/formatting. In the 1970s, GML as a text management system gained a lot of popularity and support.