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XML in isolation

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  • "Syntax, not semantics"
    • Tags have no predefined meaning
    • XML by itself conveys only content and structure, not presentation or behavior
  • There are important applications for XML alone: interprocess communication, object serialization, metadata, database exchange
  • But associating presentation or behavior with XML requires additional mechanisms
    • Downloadable programs, applets, or scripts designed for a specific tag set (grammar)
    • Tag-sensitive components (e.g., Java beans)
    • Industry agreements on the processing of specific grammars (example of the concept: HTML)
    • Stylesheets (XSL or CSS)
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XML & JAVA: PORTABLE DATA PORTABLE PROGRAMS

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