Lecture 2 - XML Introduction

Question 1

What is XML?

Answer 1

• Extensible Markup Language
• subset of SGML (Standard Generalized Markup Language)
• Text-based markup language
• Standard for data interchange on the web
• Set of rules for designing semantic tags
• Meta-markup language to define other languages

Question 2

What’s are the benefits of xml?

Answer 2

•Self-describing, structured Data

•Easy Data Exchange
–Growth of propietary data formats
–Conversion Programs (Applications, versions ..)
–Data and markup are stored as text
–Avoid store simple data in huge files

Question 3

How do I use xml?

Answer 3

• XML Document is parsed
• Data is manipulated

Question 4

Why is java and xml a perfect match?

Answer 4

–Java is portable code, XML is portable data
–Applications completely portable
–Java Virtual Machine (JVM)
–Standards-based data layer
–Java provides the most robust set of:
–APIs - JAXP
–Parsers - XP
–Processors - Saxon
–Publishing Frameworks - Cocoon
–Tools for XML - XML Pro