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XML Data

XML Data. Introduction, Well-formed XML. Well-Formed XML. Extensible Markup Language (XML) Standard for data representation and exchange Document format similar to HTML Tags describe content instead of formatting Also streaming format. Well-Formed XML. Basic constructs Tagged elements

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XML Data

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  1. XML Data Introduction, Well-formed XML

  2. Well-Formed XML Extensible Markup Language (XML) • Standard for data representation and exchange • Document format similar to HTML • Tags describe content instead of formatting • Also streaming format

  3. Well-Formed XML Basic constructs • Tagged elements (nested) • Attributes • Text

  4. Well-Formed XML Relational Model versus XML

  5. Well-Formed XML “Well-Formed” XML Adheres to basic structural requirements • Single root element • Matched tags, proper nesting • Unique attributes within elements

  6. Well-Formed XML “Well-Formed” XML Adheres to basic structural requirements • Single root element • Matched tags, proper nesting • Unique attributes within elements XML Document XML Parser Parsed XML “Not well-formed”

  7. Well-Formed XML Displaying XML Use rule-based language to translate to HTML • Cascading stylesheets (CSS) • Extensible stylesheet language (XSL)

  8. Well-Formed XML Displaying XML Use rule-based language to translate to HTML • Cascading stylesheets (CSS) • Extensible stylesheet language (XSL) Rules XML Document (data) HTML Document (look at) CSS/XSL interpreter

  9. Well-Formed XML Extensible Markup Language (XML) • Standard for data representation and exchange • Formal specification is enormous; we cover most important components

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