1. ITSE 1456 – 01 Extensible Markup Language(XML)
Ade Buraimoh

2. Outline For the Course
How semantic tagging makes XML documents easier to maintain and develop than their HTML equivalents
How to post XML documents on Web servers in a form everyone can read
How to make sure your XML is well-formed
How to format your documents with CSS and XSL style sheets
How to validate documents with DTDs
How to use entities to build large documents from smaller parts
How attributes describe data

3. What is XML Stands for Extensible Markup Language
The first thing you need to understand about XML is that it isn’t just another markup language like HTML
These languages define a fixed set of tags that describe a fixed number of elements.
It’s a language that lets you make up the tags you need as you go along
XML markup describes a document’s structure and meaning

4. XML describes structure and semantics, not formatting
XML markup describes a document’s structure and meaning

5. Related Technologies HTML
Separating content from presentation is an extremely effective technique that improves both the content and the appearance of the document. Among other
things, it enables authors, programmers, and designers to work more independently of each other.
HTML tutorial

6. Sending and retrieving form data
Explorer, Firefox
Apache, IIS, Tomcat
The Hypertext Transfer Protocol

7. Related Technologies cont..
CSS – Cascading Style Sheets
- define formatting properties such
as font size, font family, font weight, paragraph
indentation
XSL – eXtensible Stylesheet Language

8. Related Technologies cont..
XLinks
XLinks enable any element to become a link
<PLAY xlink:type=”simple”
xmlns:xlink=”
xlink:href= “
<TITLE>The Tempest</TITLE> by <AUTHOR>Shakespeare</AUTHOR>
</PLAY>
XPointers
- XPointers allow links to point not just to a particular document at a
particular location,but to a particular part of a particular document

9. Why Are Developers Excited About XML?
Domain-specific markup languages
- XML enables individual professions (for example, music, chemistry, human resources) to develop their own domain- specific markup languages
Self-describing data
Interchange of data among applications
- Java,ERP(PeopleSoft, SAP,etc…),
AJAX – Asynchronous JavaScript and XML
Use for pdf file
Structured data

10. Self-describing data <PERSON ID=”p1100” SEX=”M”> <NAME>
<GIVEN>Judson</GIVEN>
<SURNAME> McDaniel</SURNAME>
</NAME>
<BIRTH>
<DATE>21 Feb 1834</DATE> </BIRTH>
<DEATH>
<DATE>9 Dec 1905</DATE> </DEATH>
</PERSON>