XML Namespaces

Purpose of Namespaces

Name Collision Problems

Qualified Names

Local Names

Default Namespace Declaration

Prefixed Namespace Declaration

Namespace Scope

Multiple Namespace Usage

URI Purpose and Format

Absolute vs Relative URIs

URI Uniqueness

Best Practices for URI Selection

Elements in Namespaces

Attributes in Namespaces

Namespace Inheritance

Undeclaring Namespaces

Standard Namespace Prefixes

Namespace Versioning

Mixing Vocabularies