Using%20XML

1
Chapter 6

• Using XML

2
Objectives

• Explain what XML is, what it does, and what makes
  it different from HTML
• Understand the Webs limitations and XMLs
  potential
• Know what the Common Business Language (CBL) is
  and what implications it has for E-Commerce
• Work with XML style sheets

3
XML Definition

• Flexible way to create common information formats
  and share both the format and data on the Web
• Derived from SGML
• Look and feel of HTML
• Series of tags
• Tags can be used for start and end that create
  information within a file
• Creates common data definitions

4
EDI Drawbacks

• EDI is not text based
• Hard to read
• EDI does not make it easy for vendors to agree on
  formats
• EDI is complex
• EDI is hard to implement

5
HTML vs. XML

• HTML is simple
• XML follows the tag format of HTML
• HTML provides the standards for presentation
• XML provides the ability to access information
• XML tags separate content from presentation
• HTML has a standard tag set
• XML permits the creation of new tags
• HTML is an application of SGML
• XML is a subset of SGML
• HTML can handle embedding of XML
• XML complements HTML

6
XML and E-Commerce

• Move the data from
• Catalog to catalog
• Catalog to payment system
• From payment system to payment system
• Text based
• XML source written once
• Displayed in a variety of ways

7
XML EDI

• EDI present choice
• XML as standards develop
• Data Type Definition
• Specify the structure and content of a message
• Style Sheets
• CSS- Cascading Style Sheets
• DSSSL - Document Style Semantics and
  Specification Language
• CSL - Extensible Style Language

8
CBL Common Business Language

• Much of it is drawn from EDI dictionaries
• Creates a framework
• Collection of common business element that
  underlie all EDI and Internet commerce protocols
• http//commerceone.com/xml/index.html

9
XML Tutorial

• http//www-4.ibm.com/software/developer/education/
  xmlintro/xmlintro.html

10
Pages

• http//www.commerce.net/
• RFC's
• http//www.faqs.org/cgi-bin/rfcsearch
• Specification
• http//www.w3.org/TR/REC-xml

11
XML Applications

• CDF Channel Definition Format
• Push content to the user
• RDF Resource Description Format
• Describe and access data
• OSD Open Software Description
• Advertise and install software over the net