XML --- Extensible Markup Language

• XML Extensible Markup Language
• What is XML?
• XML is a Meta Markup Language
• XML describes structure and semantics, not formatting
• A Song Description in HTML
• A Song Description in XML
• Editing and Saving XML Files
• Style Sheets provide formatting
• Attaching style sheets to documents
• Style Sheet Languages
• An XSLT stylesheet
• Transforming the Document
• The XML Declaration
• A DTD for Songs
• A Valid Song Document
• Validity
• Checking Validity
• What is XML used for?
• Domain-Specific Markup Languages
• Self-Describing Data
• An XML Fragment
• Interchange of Data Among Applications
• XML Applications
• Example XML Applications
• Mathematical Markup Language
• Channel Definition Format
• Classic Literature
• Vector Graphics
• The Resource Description Framework (RDF)
• An Example of RDF
• XML for XML
• XSL: The Extensible Stylesheet Language
• XLinks: The Extensible Linking Language
• File Formats, in-house applications, and other behind the scenes uses
• A larger example: Music Catalog
• Sample Catalog
• Organizing the Data
• What is the Root Element
• The Root Element
• What are the Immediate Children of the Root?
• Child Elements
• White space in XML is not especially significant
• Composers
• Grand Children
• Attributes
• Attributes vs. Elements
• When not to use attributes
• Compositions
• Composition Example in HTML
• Each composition has a
• Composition Example in XML
• Further Divisions
• Attaching the Composer to the Composition
• Some Keywords For the Search Engines
• Standard Signature
• Cascading Style Sheets
• A Blank Style Sheet
• The Default Rule
• A style rule for the category element
• A style rule for the composer element
• A style rule for the title element
• A style rule for the catalog info
• Style rules for the signature
• Style Rules for composition children
• Finished Style Sheet
• Possible Extensions
• Possible Solutions
• CSS or XSL?
• Well-formedness Rules
• Open and close all tags
• Empty tags end with />
• There is a unique root element
• Elements may not overlap
• Attribute values are quoted
• < and & are only used to start tags and entities
• Only the five predefined entity references are used
• Programming with XML
• SAX, the Simple API for XML
• The Document Object Model (DOM)
• To Learn More
• Questions?