We are all aware that the Internet is a sizable global network made up of billions of devices running a wide range of operating systems. However, not every gadget uses the same communication platform or app. How can we connect while having few things in common or perhaps being utterly different? XML is the ideal solution to this complex issue.

We will go over the following:

  1. What is XML?
  2. Why is XML Important?
  3. Features of XML
  4. How Does XML Work?
  5. Benefits of XML

What is XML?

A set of rules for encoding scripts (documents) in a way that is both understandable and machine-decipherable is characterized by XML as a markup language.

A developer would therefore be curious to know exactly what a markup language is. Markup is data that is added to a script that enhances it in various ways while also highlighting the components and how they relate to one another.

A markup language, in particular, is a collection of emblems that can be used to identify and distinguish the parts of a script.

When combined with some content, the XML syntax in the example below makes sense:

  <text> Hello, world! </text>

This piece incorporates the labels, the markup emblem, for example, <message>…</message> also, <text>… </text>. The <message> and </message> labels (tags) denote the start and finish of the XML code block, respectively. The labels (tags) <text> and </text> cover the content "Hello, world!".

The development of XML began in the 1990s with the express purpose of incorporating the declaration of new text components. In 1996, XML was developed by the XML Working Group (formerly known as the SGML Editorial Review Board).

The organization was headed by Sun Microsystems' Jon Bosak, with the active support of an XML Special Interest Group (since renamed the SGML Working Group) that was similarly organized by the W3C.

There was a contact for the World Wide Web Consortium (W3W) on the team, Don Connolly, who stepped in as the Working Group's representative.

A few websites use the script (document) formatting language known as extensible markup language (XML). However, XML is an imperative and incredibly valuable language due to its extensibility.

To be more specific, XML is a decoupled variety of standard generalized markup language (SGML) that is meant to be used with Internet-wide scripts. Similar to SGML, XML makes use of document type definitions (DTDs) to describe documents and the effects of the tags used inside them.

In comparison to HTML, XML offers a wider variety of hypertext join types, such as bidirectional connections and connections against a script portion.

Additionally, because XML can adopt conventions, text elements can be properly interpreted and decoded. For instance, the start and end tags, <BEGIN>… </BEGIN>, define the script's elements.

Why is XML Important?

A markup language with rules to define any data is called Extensible Markup Language (XML). Unlike other programming languages, XML is incapable of carrying out computations on its own. Instead, structured data management can be implemented using any computer language or piece of software.

Think about a text document with comments on it as an example. There may be recommendations in the comments like these:

  • Make the title bold
  • This sentence is a header
  • This word is the author

Such suggestions enhance the usability of the document without changing its content. Similarly, XML uses markup symbols to provide more details to any data. This data is used by other software, such as browsers and data processing applications, to process structured data more effectively.

Features of XML

Numerous aspects distinguish XML from other languages. The list of key XML features is shown below.

  • Extensible and Human Readable
    Even if additional data is added, most XML applications will continue to function as intended.
  • Overall Simplicity
    Data availability, platform modifications, data transit, and sharing are all made simpler by XML. Without losing data, XML makes it simpler to upgrade or extend to new operating systems, apps, or browsers. A wide range of "reading devices," including people, computers, voice assistants, news feeds, and more, can have access to data.
  • Separates Data from HTML
    Using XML, data can be saved in a variety of XML files. Thus, you won't need to update HTML to make changes to the underlying data, allowing you to focus on using HTML/CSS for display and style.
  • Allows XML Validation
    An XML document can be validated using a DTD or XML schema. By doing this, the XML document is guaranteed to be syntactically valid and any issues brought on by flawed XML are avoided.
  • XML Supports Unicode
    Given that XML is compatible with Unicode, it may transmit virtually any information in any written human language.
  • Used to Create New Languages
    Many new Internet languages have emerged as a result of XML. WSDL can be used to describe available web services. WAP and WML are utilized as portable device markup languages. The RSS languages are used for news feeds.

How Does XML Work?

XML works in several ways, one of which is a predictable data format. Due to the tight formatting requirements of XML, programs that process or display the encoded data will produce an error if the formatting is incorrect.

An XML document must be valid XML code for it to be regarded as well-formed, that is, conforming to XML syntax and capable of being read and understood by an XML parser.

Elements are the building blocks of every XML document; an element serves as a data container. With other elements or plain data inside, opening and closing tags mark the start and end of an element, respectively.

The way XML functions is by supplying correctly formatted data that can be dependably processed by applications made to accept XML inputs.

For instance, technical documentation might have an element like the one in the XML code sample below:

<emphasis type="bold">May cause serious injury</emphasis>

Exercise extreme caution as this procedure could result in serious injury or death if precautions are not taken.


In this illustration, the form factor of the technical documentation determines how this data is interpreted and shown. This element could be shown in the following manner on a webpage:

WARNING: Exercise extreme caution as this procedure could result in serious injury or death if precautions are not taken.

On a user interface (UI) for an appliance or in print, the same XML code appears differently. Depending on how this element is interpreted, the text designated as emphasis may be shown in a different way, such as in red with flashing highlights. When printed, the text could have a different typeface and format.

Presentation is not specified in XML documents, and there are no default XML tags. The majority of XML applications employ predetermined tag sets that vary based on the XML format. The majority of users create their documents using standard XML formats, but they can also specify new XML elements as necessary.

Benefits of XML

Here are a few major benefits of using XML:

  • Support Interbusiness Transaction
    When a business sells a product or service to another business, the two companies must share details including price, specifications, and delivery times. They can electronically exchange all the required information and automatically finalize complicated deals using Extensible Markup Language (XML), all without the need for human participation.
  • High Independence
    The extreme independence of extensible markup language XML data over many other languages is one of its most obvious advantages. It implies that XML files can be easily packaged for portability and used on a variety of platforms.
  • Readability
    Although XML files are not intended to be read directly, if you have a little understanding, you can greatly benefit from your job by studying the data layers within them. XML documents choose to represent the syntax with pleasant text characters rather than condensing it or utilizing sophisticated syntaxes.
  • Highly Customizable
    Each user can construct a wide variety of tags with unique conditions of usage using the XML specification without having to worry too much about the originals. If it suits your purposes, you can even repurpose your tags from other users.
  • Suitable for Any Platform
    The contents inside the XML file can be read and parsed swiftly by systems in addition to people. Therefore, using XML files, the transmission of display data across many programs and processes will be simple.
  • Improve Search Efficiency
    XML files can be sorted and categorized more effectively and precisely than other forms of documents by computer programs like search engines. The wordmark, for instance, can be either a noun or a verb. Search engines can accurately categorize marks for pertinent search results based on XML tags. As a result, XML makes it easier for computers to understand natural language.
  • Design Flexible Applications
    You can easily update or change the design of your application using XML. Numerous technologies, particularly more recent ones, include built-in XML support. To make updates without having to completely reformat your database, they can automatically read and interpret XML data files.


Learning XML is a rather basic process. While it is possible to study XML on its own, it is far more beneficial to learn it in conjunction with a programming language to process and utilize the data that it stores.

Developing frontend websites frequently make use of XML. Because some APIs use it to convey data in a consistent format, it is also utilized in backend web development. XML is also frequently utilized by Android applications to build layouts and save configurations.


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Janani works for Atatus as a Content Writer. She's devoted to assisting customers in getting the most out of application performance monitoring (APM) tools.

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