SGML, XML, HTML

1
SGML, XML, HTML

• Joshua Martin
• Jarrett Okihara
• Paul Woolley
• Lena Yi
• March 12, 2003

2
Agenda

• Markup Language
• HTML
• XML
• SGML
• Summary

3
Definitions

• HTML Hypertext Markup Language
• XML Extensible Markup Language
• SGML Standard Generalized Markup Language

4
Markup Language

• HTML, XML, SGML
• Tag Based
• E.g. ltBodygt lt/Bodygt
• Description

5
HTML

• Description of
• Display
• E.g. ltstronggt Bus 311 lt/stronggt
• Functionality
• E.g. LinKs (http/www.yahoo.com)
• For Browsers

6
XML

• Description of
• Data
• E.g. ltClassgt Bus 311 lt/Classgt
• For Machines
• E.g. Servers

7
How is HTML used?
I wonder what the Weather is gonna Be like in
Manoa Today
2. HTML documents
Yahoo! Server
3. Display Info
1. Input Zip 96822
8
With or Without Display

• Honolulu Today
• Add to My Yahoo!
• at 652 pm HST
• Fº Cº
• Currently75º
• Partly Cloudy
• Hi 80
• Lo 69
• Honolulu HI US Video
• Forecast
• Text Forecast
• Get this forecast by
• email
• 5 Day Forecast
• Today
• Tomorrow
• Thu

9
XML

• Description of
• Data
• E.g. ltClassgt Bus 311 lt/Classgt
• For Machines
• E.g. Servers

10
How is XML used?
I wonder what the Weather is gonna Be like in
Manoa Today
Yahoo! Server
1. Input Zip 96822
4. HTML documents
5. Display Info
3. Send Data (Machine-to Machine)
XML Docs
XML Docs
Weather Server
2. Request Data
11
XML Document

• lt96822gt
• ltHighgt88lt/Highgt
• ltLowgt78lt/Lowgt
• ltHumiditygt60lt/Humiditygt
• ltPrecipitationgt1.2inlt/Precipitationgt
• lt/96822gt

12
SGML

• Description of
• Data, Display, and Functionality
• For
• Machines and Browsers
• Very Complex

13
How is SGML used?
14
SGML Tags
15
(No Transcript)
16
Vendors and Proponents

• HTML
• Web Browsers
• XML
• Microsoft, Oracle
• SGML
• Boeing, U.S. Govt.

17
Future

• HTML
• XHTML
• XML
• XML growth
• SGML
• Boeing, U.S. Govt.

18
Summary
Simple

• HTML
• Display
• XML
• Data
• SGML
• Mother

Complex
19
Summary Cont

• Paul Woolley
• Jarrett Okihara
• Joshua Martin
• Lena Yi
• March 12, 2003

20
Bibliography

• www.w3.or/TR/NOTE-sgml-xml.html
• www.ucc.ie/xml/faq.xmlsgml
• www.infoloom.com/gcaconfs
• http//www.w3.org/XML/
• http//html.about.com/library/weekly/aa060401a.htm
  
• http//www.w3.org/Math/
• http//www.ch.ic.ac.uk/omf/cml/
• http//www.w3.org/XML/Activityfuture
• http//www.usfca.edu/fac- staff/morriss/651/spring
  00/techprojects/xml/HowXML .html
• Jeff Mcneill
• http//www.infoloom.com/gcaconfs/WEB/chicago98/bau
  m.HTM