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What is the XML markup language and what does it do?

زبان نشانه‌گذاری XML چیست و چه کاربردی دارد؟

XML A language Marking To create a format and structure for information to facilitate its easier analysis and to create a well-defined structure for text documents, as well as to facilitateInformation sharing Contains data in various sources. In this article, we are going to see what exactly this markup language is Applications And what are its benefits.

What is XML?

Word XML Abbreviation for phrase extensible markup language Means Extensible markup language Is. Markup language is a set of codes or tags that describe text in a digital document. The most popular markup language is hypertext markup language, or HTML, which is used to create formats for web pages. XML is actually a more flexible form of HTML that allows you to manage complex businesses over the Internet.

It should be noted that in some XML sources it is mistaken as Programming language Has been introduced; But it is not a programming language and is just a markup language used to describe data using tags that interpret the data. Programming languages ​​have instructions for implementation Algorithms are; But markup languages ​​are used to format data for data using software running algorithms to interpret the marked data.

What are the advantages of XML over HTML?

Advantages of XML over HTML

XML specifies the appearance of a digital document for a browser application; but in HTML Describes the content of that document. In other words, how information is organized in a digital document is about XML, not how it is displayed. Simply put, XML defines encoded data and is used to store structured information; HTML, on the other hand, defines the format created to display information and is used to present information.

Organizing and creating an XML structure is done in several separate style sheets.

To better understand the difference between the two languages, consider the Command tag in HTML.

Each website developer uses static tags to use this tag, which is commonly used to command (it is not possible for them to add new tags); But in contrast XML allows the user Dedicated label Create itself to use the data to use it or to label different parts of the data structure; Simply put, it is possible to create custom tags for different items using XML; But this is not possible if you use HTML.

XML has many advantages over flexibility. This feature allows you to exchange data between databases created for different companies without losing the essential information that describes them.

In addition, by taking advantage of this feature, you can replace Show a page Automatically customize site content for each visitor with the same content for all visitors. All of these benefits make it easier for users to find exactly what they are looking for when searching for different topics in search engines; Undoubtedly, search engines categorize accurate tags more easily than long pieces of text.

Of course HTML has an advantage over XML has it. If HTML is used, it is possible to use pre-defined tags and semantics (meaning defined meanings for a group of symbols); But if you use XML, you are deprived of these tags and semantics

What are the commercial applications of XML?

Because this markup language enables the encoding of complex data on websites, companies can use it to combine their information streams. By creating a collection of XML tags For all company data, information can be shared without any restrictions between web pages, company databases and back end systems.

Backing systems are systems that are used to store inbound information to websites; For example, when a user registers a request to purchase a product in an online store, this information is stored in the online store system.

XML demonstrates its true potential in business transaction support systems. When a company offers goods or services to another company, a large amount of information must be exchanged, including information about prices, terms, features, delivery times, and more. Using HTML, which is of a nature that can be used for a variety of purposes, can make the exchange of information in such processes over the Internet very difficult or even impossible.

Using XML, all the necessary information can be shared electronically between different websites. Such a feature makes it easy to make complex transactions without human intervention.

For this reason, many online stores that have built a direct bridge between buyers and sellers (such as Amazon, Alibaba, and other online stores that also offer goods and services) have long used XML code to communicate automatically between buyers and sellers. they do. It is likely that in the not-too-distant future, all companies will use tags in this markup language for such cases.

Another major use of scalable markup language is to create simple text-based formats for structured information, which can be used for:

  • Usability as an underlying tool for formatting data in applications such as Microsoft Office applications
  • Technical and technical text documentation
  • Create configuration options for applications and software in text format
  • Creating e-books
  • Create text factors

It should be noted that this markup language can be used in addition to exchanging and sharing information in transactions, to share information between different programs, between programs and people, and between local memory and networks.

How to share information among companies that create proprietary XML tags

A company may create unique labels that are unrecognizable to suppliers and buyers without the use of a standardized syntax (a set of rules that define symbols combined to describe a subject in a language). To reduce the likelihood of such a problem, XML Dictionary Created for various fields including finance, mathematics, chemistry and e-commerce.

These dictionaries standardize the definitions provided for XML tags; For example, JP Morga, a financial and banking services company, and PricewaterhouseCoopers, a financial and investment consulting firm (both located on Walt Street, USA), have created the FpML dictionary. Standardizes XML tags for foreign exchange and other financial transactions. It is likely that similar attempts will be made to use XML in this way in the future.

The benefits of creating a text document using XML

As we have said, one of the key uses of this markup language is to create a text document. If you use this language, you can specify the structure of the data and create tags to interpret the data using them. For this reason, text documents created with this language can be easily parsed by other software.

To better understand this, let us give an example. You can use HTML to create various lists, including numeric lists; But you can not create a separate tag for each step in the content that is created in the form of individual steps to complete a process; But using XML, it is easy to create a list of steps to do a task with a specific tag for each step. For example, you can specify which steps are absolutely necessary, which ones are optional, and which ones are optional. They can be replaced with other methods in steps that can be done.

In addition, if you want to create text with multiple titles, you can use this markup language to specify which of the titles is the main title and then specify the subtitles or so-called intermediate titles. You can also specify headers and footnotes, as well as chapter titles, if you want the output of your document to be an article or print book.

How to use XML files

XML file
Example of an XML file

The output of this markup language is created in the form of plain text files and you can open these files with any text editing software; Of course, there are a number of specialized software to make writing or editing easier, which have more capabilities than conventional text editing software, which includes the following:

  • Highlight syntax to track complex XML tags
  • A tool for refreshing and analyzing XML to validate XML code and display parsed data
  • Create and delete XML tags and nodes (nodes are the component elements of a file)
  • Enhanced user interface for editing multiple files simultaneously
  • Graphical user interface to enable visual display of relationships between XML elements and make it easier to display complex XML elements such as tables and more
  • Have tools created to facilitate editing, including macros, customization elements, and tools created to search for specific elements and replace them with other elements.

Among the best XML editors The following can be mentioned:

  • Oxygen XML Editor
  • XML Notepad
  • Adobe FrameMaker
  • MadCap Flare
  • Quark Author
  • Liquid XML Studio

It should be noted that the files of this programming language have a structure very similar to the structure of the programming code, in which they specify the file headers of their content as well as the hidden elements.

What is XML?

This markup language is used to create a format and structure for information to facilitate its easier analysis and to create a well-defined and categorized structure for text documents, as well as to facilitate the sharing of information in various data sources such as databases.

What are the uses of XML?

Among the most important applications of this language are the sharing and exchange of information between various sources of data and information, the creation of common text documents such as books, articles or invoices, and the creation of information needed to configure software and applications.

How should we use XML markup language?

To use this markup language, you need to edit and write this language from dedicated editors Oxygen XML Editor use.

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