XML and the Automation of Web Information Processing

3/3/99

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Table of Contents

XML and the Automation of Web Information Processing

What’s Wrong with HTML

What’s Wrong with HTML

HTML is Too Far Away from being an Information Model

… and the Sad Results

Programs/Agents require Intricate Parsers

… and the Web becomes a mere Client to DBs

XML is based on Markup

Elements and their Content

Element Attributes

The Need of Ontologies

Document Type Definitions

Element Declarations

Element Content Declarations

Attributes and Their Uses

Attribute Types

More on Attribute Declarations

Lots of Flexibility

… and some deficiencies

Physical Structure & Entities

Uses of Entities

Declaration and Use of Internal Text Entities

External Text Entities

Binary Entities and Their Use

DTD Guided Browsing

Problem: Information Resides on Multiple Heterogeneous Sources

XML View Definition Language

XML-Link & XML Pointer

X Pointers and Addressing

Why Style Sheets & XSL?

Style Languages - History

The Simple Pattern Matching of CSS

CSS - Subclassing Elements

XSL - Design Principles

The XSL processor

A Concrete Example: Recipes

XSL - Construction Rules

XSL - Simple Patterns

XSL - Wildcard Context

XSL - Attributes

XSL - Qualifiers

XSL - Simple Actions

CORBA/OLE vs XML

Author: Yannis Papakonstantinou