Chapter 3 XML(eXtensible Markup Language) Introduction - Technology369kk
XML
XML (eXtensible Markup Language) is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. It is designed to be platform-independent and widely supported across different systems and applications.
XML uses tags to define elements and structures within a document. Each element is enclosed within angle brackets (`<` and `>`), and elements can have attributes represented as name-value pairs within the opening tag. The content of an element can include text, other elements, or a combination of both.
XML was designed to store and transport data. It is a textual data format with strong support via Unicode for different human languages.
Table of Content :
XML Introduction:
- (XML) eXtensible Markup Language means that we can create your own tags.
- It is used to store and transport data.
- Self description.
- Used to carry data(Not used to display).
- Self Defined tags.
- Platform and language independent.
- Helps in easy communication b/w two platforms with databases.
Features and Advantage:
- Separates data into html from.
- Simplifies data sharing
- Simplifies data transport
- Increase data availability
- Simplifies platform change.
- DATA>> EXPORT>>XML>> ORCLE/MYSQL
XML Example and Structure :
Example of XML:
<!-- // Declaration -->
<? XML version ="1.0" encoding="UTF-8" ?>
<!-- //Root Element or Parent Class -->
<college>
<!-- child class of collage -->
<class>
<name>Shailesh </name>
<roll>82025 </roll>
</class>
<class1>
<name1>Jaiswal</name1>
<roll>82062</roll>
</class1>
</collage>
- In this example, the XML document represents a simple bookstore. The root element is `<college>`, and it contains two `<title>` and `<class>` elements as its child elements. Each `<name>` `<roll>` element has attributes (`category`), and it contains name and roll number elements representing the college attributes in a xml file respectively.
Structure of XML:
- Hierarchical Structure: XML documents are organized in a hierarchical structure, with nested elements representing parent-child relationships.
- Customizable Tags: XML allows the definition of custom tags and elements that are meaningful in the context of the specific application or domain.
- Self-Descriptive: XML documents are self-descriptive, meaning that they contain both the data and the metadata necessary to interpret and process the data.
- Extensibility: XML is designed to be extensible, allowing users to define their own elements and document structures to suit their specific needs.
- Data Interchange: XML is commonly used for data interchange between different systems and platforms, as it provides a standardized format that can be understood by multiple applications.
- Wide Industry Adoption: XML has gained widespread adoption in various domains, including web services, data storage, configuration files, document formats (such as RSS and XHTML), and more.
Diffrent Between HTML and XML:
HTML :
- Display data (Look and Feel)
- Markup Lang it self
- Not case-senstive
- Predefined tags
- Static
- Example of HTML
<!DOCTYPE html>
<html>
<head>
<title>Document Title</title>
</head>
<body>
<h1>This is Heading</h1>
<p>This is Paragaraph </p>
<b>This is bold Tags</b>
<i>This is itile tags</i>
</body>
</html>
HTML :
- Transport and store the data.
- Provide framework to define markup language.
- Case-senstive
- Can create own tags
- Dynamic
- Example of HTML:
<!-- // Declaration -->
<? XML version ="1.0" encoding="UTF-8" ?>
<college>
<class1>
<name1>Jaiswal</name1>
<roll>82062</roll>
</class1>
</collage>
I hope this is Helpful For You... Learn more:
Next Chapter :
- Displaying XML Documents:
- XML and CSS.:
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