1. XMl
Extensible
Markup
Language
Kiran
A -6
D1111

2. History :• XML is designed to carry data, not to
display data.
• It has its roots in document
management and is derived from SGML
•It is officially recommended by W3C.

3. What is XML?
• XML means “Extensible Markup
Language”, is a markup language
much like “HTML”.
• It is designed to transport and
store data and a method for putting
structured data into a text file .

4. • Enables you to create and format your
own documents markup.
• The term markup refers to anything
that is not intended to be part of the
printed output.
• The markup takes the form of tags
enclosed in angle brackets,<>.

5. What is SGML?
• SGML is a international standard for
defining descriptions of the structure
and content of different types of
electronic documents.
• A universal language used to describe
thousands of different data types.

6. What is HTML?
• HTML is a “Hyper text Markup
language”, a specific language of SGML
used on World Wide Web.
•

7.  HTML
 XML
 HTML is for humans.
 XML is for computers.
 HTML describes web
 XML describes data.
pages.
 Tags and attributes are
predetermined and rigid.
 You don’t want to see
error messages about the
web pages you visit.
 Allows user to specify
what each tag and
attribute.
 The rules are strict and
errors are not allowed, in
this way XML is like a
programming language.

8. XML Facts:• important because it removes two
constraints which were holding back
Web development:
• Dependence on a single, inflexible
document type (HTML).
• The complexity of full SGML, whose
syntax allows many powerful but
hard-to-program options.

9.  Documents Schema:• Document type definition(DTD)
• XML Schema
 Querying and transformation
XPath
Xquery
•FLWOR E expressions
•Joins
•Nested Queries
•Sorting of Results

10. •Functions and Types
•Other Features
XSLT**
Application Program Interfaces
• Document Object Model(DOM)
• Simple API for XML(SAX)
• Storage of XML Data

11.  Storage of XML Data:•Non -relational Data Stores
• Relational Databases
•Store as String
•Tree Representation
•Map to relations
•Publishing and Shredding XML Data
•Native Storage

12. •SQL/XML
 XML Applications
• Storing data with Complex Structure
• Standardized Data Exchange Formats
•Web Services
• Data Meditation

13. Advantages
• Self Documenting
• Makes your data more available
• Nested Structure
• Simplifies Platform Changes
•Simplifies Data Transport
•Simplifies data sharing

14. XML Syntax rules
• All XML elements must have a closing tags
• XML Tags are case sensitive
• XML Elements must be properly nested
• XML documents must have a Root
Element

15. Thanx