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XML Data Introduction, Well-formed XML.

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Presentation on theme: "XML Data Introduction, Well-formed XML."— Presentation transcript:

1 XML Data Introduction, Well-formed XML

2 Extensible Markup Language (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

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

4 Relational Model versus XML
Well-Formed XML Relational Model versus XML Relational XML Structure Schema Queries Ordering Implementation

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

6 Adheres to basic structural requirements
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 Use rule-based language to translate to HTML
Well-Formed XML Displaying XML Use rule-based language to translate to HTML Cascading stylesheets (CSS) Extensible stylesheet language (XSL)

8 Use rule-based language to translate to HTML
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 Extensible Markup Language (XML)
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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