Implementation of Front end

• The front end is some document consisting of a mix of HTML or XML

  • The HTML is whatever you want to make a nice page
  • The XML is converted into some variant of HTML by
    • Browser default or
    • XSL style sheet
    • User Program -- logically in middle tier
  • Note HTML can include Java applets either directly or invoked from XSL style sheets

• We will NOT discuss either how to code backend in PLSQL or Fortran or how to compose final rendered document in HTML

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