Comprehensive XML Tutorial: From Basics to Advanced Validation Techniques

Master XML (Extensible Markup Language) with this complete tutorial, ideal for beginners and experienced developers. Learn XML fundamentals, DTD (Document Type Definition) and XSD (XML Schema Definition) validation, and best practices for creating well-structured and valid XML documents.

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XML Tutorial

Our XML tutorial is designed for beginners and professionals, providing detailed knowledge on XML technology, including:

XML Validation

XML files can be validated in two ways:

  1. Against DTD (Document Type Definition)
  2. Against XSD (XML Schema Definition)

DTD and XSD are used to define the XML structure.

XML DTD

In this section, you will learn about DTD files, creating XML with DTD, using CSS files, CDATA vs PCDATA, and the difference between DTD and XML Schema.

Let's see an example of XML using a DTD file:

    <?xml version="1.0"?>
    <!DOCTYPE employee SYSTEM "employee.dtd">
    <employee>
        <firstname>vimal</firstname>
        <lastname>jaiswal</lastname>
        <email>vimal@tutorialsarena.com</email>
    </employee>

A detailed description of XML with DTD is given on the following pages.

XML Schema

In this section, we will provide a detailed description of schema files, XML schema validation, XML schema data types, and XML parsers.

Let's see an example of XML using an XSD file:

Sample XML

    <?xml version="1.0"?>
    <employee xmlns="https://tutorialsarena.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://tutorialsarena.com/ employee.xsd">
        <firstname>vimal</firstname>
        <lastname>jaiswal</lastname>
        <email>vimal@tutorialsarena.com</email>
    </employee>

Prerequisite

Before learning XML, you should have basic knowledge of HTML.

Audience

Our XML tutorial is designed to help both beginners and professionals.