INSYS 300 XML

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INSYS 300 XML
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XML

• eXtensible Markup Language
• Separate logical structure from presentation
• DTDs
• XSL / XSLT
• Advantages of custom-designed tags
• Better indexing
• Fielded search

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XML For Structuring Documents

• Logical structure
• DTD or XSCHEMA
• Standard DTDs from publishers
• Use XML Authoring tools like
• Corel Xmetal
• SoftQuad HotMetal
• Text Encoding Initiative (TEI)
• Layout structure
• XSLT
• Can be used to convert XML to HTML

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XML eXtensible Markup Language

• Not a metadata system but a way of organizing
  document tags
• Sometimes used to mark-up regions of the text
  (e.g., text blocks ltpgtlt/pgt)
• Style sheets with XSL, processed with XSLT
• RDF Resource Description Framework extends XML
  for Resource Descriptions (e.g., metadata)
• Standard is defined by WC3 (w3c.org)

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XML XSLT X-Style Language Transformation

• XML documents can be displayed in may ways.
• As HTML, PDF, PPT, etc

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XML XLINK

• Links can have attributes such as role

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RDF - XML for Metadata Attributes

• Resource Description Framework (RDF)
• The name says it all
• Specify associations between Web page and
  attribute
• Can use RDF for Dublin Core

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XML for Structuring Web Objects

• SVG Scalable Vector Graphics
• MathML
• OAI
• Databases
• ER-XML
• MARCXML
• MODS
• P3P Privacy specification
• PICS Content rating system (like movie ratings
  PG, G
• Semantic Web XML as a Knowledge Representation
  language

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Some Frontiers of the Web

• Web Services
• Computer-to-computer information from a Web
  server
• Web Servers for writing as well as reading
• Wiki (CGI)
• WebDAV
• MPEG7 (uses XML and Dublin Core)
• For describing the internal structure of Video