Image    47 Extensible Markup        Language (XML)

Kevin S. Clarke

CONTENTS

Introduction

History

Extensible Markup Syntax

The XML Declaration

Elements

Container Elements

The Root Element

Empty Elements

Mixed Content

Attributes

Comments

Processing Instructions

Entities

CDATA Sections

XML Namespaces

Specific Uses in the Library Environment

Conclusion

References

INTRODUCTION

XML, the Extensible Markup Language, is a syntax for tagging, or marking-up, textual information. It is often described as a metalanguage because it provides a set of rules from which other, data-specific, markup-based languages may be created. As a syntax, XML does not exist in ...

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