Session01 XML Intro Overview

8/14/2019 Session01 XML Intro Overview

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2008 MindTree Consulting

XML Introduction

XML Programming Overview

Sep-2009


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Slide 2

Agenda

Introduction to XML

Need for XML


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Slide 3

Brief History of XML

Developed in 1996 by W3C.

A subset of and based upon SGML (Standard Generalized Markup

Language).

Originally designed to meet the challenges of large-scale electronic

publishing.

Designed to be both machine readable and human readable.


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Slide 4

What is XML?

XML provides a platform-neutral, language-independent means ofdescribing data.

XML documents can be validated in many ways to ensure consistent

format.

XML allows us to define your own tags, so we can create our own

markup languages.

The XML specification is owned by W3C

XML is about the description of data, and not its presentation.


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Slide 5

Cont..

XML Extensible Markup Language

Based upon HTML

Describe your own tags

Uses DTD ( Document Type Definition ) to describe the data

XML is not a replacement for HTML

XML is a language for creating other languages

Documents follow the custom language a user develops from XML

Labeled information in XML can be reused

Need to follow the rules accordingly


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XML Syntax

XML uses a tag markup syntax similar to HTML.XML is case sensitive

is not the same as

Elements

Element is the basic container for content

Tags

Start tag

Contains element type name

End tag

Empty element tag

Attribute Tag Content Tag

Element

Employee


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Well formed XML - example

Suraj

Kumar

Verma

IT Services

C2

, even these symbols don't bother it.]]>

AbhiDhar

R&D Services


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Valid XML

Why validate XML at all?

Valid XML data is well-formed data that also complies with syntax,

structural and other rules as defined in a Document Type

Definition.

Alternatives to DTD

XML Schema

XML Data


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XML Parsers

Two common XML Parser specificationsDOM

SAX

When to user SAX

Large document handling

Retrieving a specific value from a document

Creating a subset document

When to use DOMModifying the document

Random access


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Questions


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Thank you

XML Technology, Semester 4

SICSR Executive MBA(IT) @ MindTree, Bangalore, India

By Neeraj Singh (toneeraj(AT)

gmail(DOT)

com

)
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